How does Apple prevent people from unlocking their brand new iPhone 3GS 8GB? They replaced one of the components inside! As it turns out any 3GS produced after week 28 of year 2011 (sometime in July) is made with Toshiba baseband chip, as opposed to Infineon baseband chip.

If you attempt to flash it using iPad baseband 6.15.00 there is a risk of bricking your phone! Take this as a warning!

The typical symptoms of a corrupted baseband chip are:

  • No WiFi
  • No ECID
  • No IMEI
  • No Bluetooth

Please take note of serial number of up to XXX109XXX may NOT be compatible with the iPad baseband. See example below:

XX109XX = 1 is the year of 2011 and 09 is week 9 of 1 year

If the serial number is XX931XXX that means it was produced in 2009 in week 31. Thus, it’s safe to flash it with the iPad baseband. If you’re already encounted with the errors above, consider having your logic board fixed. Contact us for a free quote.

You can use this website to check your iPhone’s production year and week based on its serial number.

If you intend to unlock your iPhone by flashing it with an iPad baseband, please check your serial number first!

So which year production and week number is your iPhone 3GS?

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124 Responses to “New iPhone 3GS 8GB Uses Toshiba Baseband Chip Not Compatible with iPad Baseband 6.15.00”

  1. iphonerepair Says:

    Anything produced in 2011 has high risks


  2. jalani Says:

    hi there!,..

    it is possible to replace toshiba chip into infenion chip?,..


  3. Coco Says:

    Downgraded new iphone 3gs to 4.1 and unlocked with 6.15.00 with no issues. It was produced in week 39 of 2011. Guess I got lucky!


  4. iphonerepair Says:

    damn lucky indeed!


  5. Gecko Says:

    It's practically impossible for Baseband processor (Infineon) to change to Toshiba…However if it is true that some hardware has changed- the Baseband NOR (Numonyx) would seemingly be the candidate..only way to find out is to check yourself to confirm..

    The week 09 as a rule posted by a few people also seems very overzealous.. personally I've only seen problems from week 35+ but I until it can be checked directly rather than serial I guess it's better to be safe than end up with a possible permanent brick


  6. iphonerepair Says:

    after reviewing some forums, I would agree with you on this one

    I'd play safe and set the week production to earlier than the stated "safe week"….

    But ultimately, flash at your own risk!


  7. Steee Says:

    would it be fine to unlock my iphone? here are the details….

    production year – 2011
    production week – 05 (feb)

    cheers!


  8. iphonerepair Says:

    risky! proceed at your own risks…


  9. sid Says:

    i have the same one with produdction year =2011 and production week=39, should I go aheady and unlock with 6.15.00?


  10. iphonerepair Says:

    Most likely it's going to break….


  11. sid Says:

    what do you suggest me do?


  12. Seere petrova Says:

    THIS IS A WARNING…just got two of them…bricked…so my suggestions are dont flash it…


  13. priya Says:

    is it possible to unlock 3gs iphone made with Toshiba baseband chip, as opposed to Infineon baseband chi


  14. woymac Says:

    hi iwas trying to update the baseband to 6.15.00 on my 3gs 5.16.05,i followed all the steps ,everything was ok untill i got to step 11. i try to launch cydia but ther was no wifi on my i phone(no bluetooth,no ecid,no imei) so i went to step 17 (broken wifi,ifun-box) i followed instruction, but didnt worked. then i found out about serial # which in my case is XX138XXX . i understand that i may have corrupted baseband chip, is there any way out of this situation? thanks


  15. Perry Chance Says:

    Send your logic board to beijingiphonerepair and have the replace your baseband chip. You will get it back unlocked with a baseband that is untethered. Total cost with shipping is around $89.00.


  16. herb64 Says:

    my serial number xx052xxxxxxwould this be OK to update the baseband please help


  17. darkkarma10 Says:

    just got a new iphone last night and didn't even think of looking this up. i have serial# 8xx128xxxxxx and it bricked my iphone 3gs. i wish i would've known about this earlier. There really isn't any other info on this around the web as I did a ton of searches before coming across this one.


  18. justin12180 Says:

    Mine has xx112xxxxx will it work?


  19. justin12180 Says:

    I did it anyways, And it turned out great. Got it working. :)


  20. tommy Says:

    my serial number is 87143LWWEDG ???


  21. RayG Says:

    My serial number is xx144xxxxxx. I downgraded to 4.1. then tried to jailbreak and install iPad baseband. I got the same issue. It would not start up or anything. So i re applied the redsnow jailbreak and iPad baseband. I still got the blank baseband values. Thought I was screwed. I just downloaded the 5.0.1 firmware then did a restore with i tunes and the phone came right back up with proper baseband settings. Not sure if it will brick after so many times but mine came right back with re-applying the jailbreak so it will boot then just restore stock 5.0.1 firmware.

    Hope this helps those who have tried

    Ray


  22. iphonerepair Says:

    thanks Ray


  23. castilloavektimoun Says:

    hey guys my phone is xx014ylx3xx would this phone be ok to update the baseband?


  24. iphonerepair Says:

    should be ok but at your own risks!


  25. Josh Says:

    hey mine is 860415j8edg


  26. Dimi Says:

    Hi there,

    I am so glad to find this post before installing iPad baseband. Mine is 3Gs xx117xxxxxx. That means it is produced 2011, 17-th week. According the information above it should be alright to install iPad BB, right?


  27. iphonerepair Says:

    Anything produced in 2011 is risky, proceed at your own risks!


  28. Dimi Says:

    Thanks for the answer. But the risk isn't big because I can restore it with 5.0.1 like Ray did and it will be in the same condition like now. Right?


  29. sammharr Says:

    I have iphone 3gs 8gb

    86143xxxxxx can i unlock mine??


  30. nanoluis Says:

    Hi COCO! How are you doing!? I have an iphone like yours! same production week and year!
    I could onlyrestore to ios 4.1 or some others but with the problem of No WIFI,Bluetooh etc……Also, after the iphone gets to the initial configuration, it restar by its own even with a full battery
    I am already a month trying all the possible ways and programs…. Could you help me to do what you did, PLEEEAASEEE!!!
    I will apreciate soo much!
    my email is nanoluis@hotmail.com in case you need it.

    THANK YOU AND ALL IN ADVANCE FOR YOUR HELP!!!


  31. darkkarma10 Says:

    I don't know if this always works though as I tried 5 or more times to restore to 5.0.1 after my blank baseband values and after each one the values were still blank. It's worth a try but I don't know if I would count on this working a large percentage of the time.


  32. nanoluis Says:

    Hi Ray! That's is great! so, your phone is a 3gs production year 2011 and week 44th right? Mine is week 39th._I replied to COCO to his message ,telling him my situation. It is similar to your just that the iphone i have was brought from a pawn shop….. (last time I do this hehehehe) I was told that previous owner took out all his info and the phone needed a restore through itunes…… so I took the risk….. then After many tries, I could restore some of the firmwares but in all of them :
    1- at information settings : no wifi, no bluetooth, no emei… (exactly as the picture above, from the post)
    and
    2- every time the phone starts, it takes about 3 minutes and then turn off and back on. It restarts by its own in a loop…..

    Can you help me to solve the problem??? The only thing I did do is to install ipad baseband…. even if I know that it might be the problem with the previous owner (corrupted baseband vs toshiba baseband chip)
    I do not know exactly if I install the ipad baseband, If I get any possibility to restore 3gs again with original firmwares or not….

    Can you, or someone help me please???!!!
    Thank you in advance!


  33. sadeq Says:

    my Iphone 3gs the new one and latest version, it is bricked wifi and other stuff because of my trying to unlock it, if I send the phone to iphone repair in China will replace the chip, that will fix the Iphone back and be unloked?


  34. iphonerepair Says:

    we'll be back early January 2012


  35. Chris Says:

    Sounds like Ray has been a very very lucky guy! I have tried everything with a 3GS I got to unlock for a customer including the restore with ios 5.01. Tried it several times with the same outcome (error -1) done a lot of searching over Internet and seems everyone who has tried the restore gets same stupid -1 error. Don’t think anyone else has managed to rescue a Toshiba processor apart from the guys who rip them out and replace them with an unlocked one out in China. Hope someone does find a fix, however none of the jailbreak team have found one yet so I think it has been an expensive lesson for us all!
    Happy jailbreaking everyone think I will be keeping back from the unlocks in future when it comes to screwing with baseband processors!


  36. Sally Says:

    I have the same exact issue with the iTunes error. I was just wondering if I should sell it now or wait until a new update and try to restore then? Also, for those who have downgraded, did you do it with SHSH blobs or what? I don't have those. I'm so mad at myself about this. Huge mistake.


  37. Guragew Says:

    Don't do it cause your phone produced at 2011 43rd week ,this has a risk


  38. Raf Says:

    My phone problem is that i got the same issue because i didnt know about the Toshiba chip,and i flashed it with the base band 6.15.00, and now it's bricked, I can UnBrick it but What do i do to fix this problem to unlock it


  39. Gabriel Says:

    Is there any way to unbrick a 3GS iPhone with the same rebooting symptons as above??!!Please can somebody take a couple ofminutes and help me? pm me at this address email : gaby_redX@yahoo.com !!!!!!!!!!


  40. woymac Says:

    Unbrick it?Please let me know ,how.


  41. victor Says:

    Yeah( It was truth.

    Failed 05.16.05, 44 week.

    Can I fix baseband somehow fixing hardware?

    When I got 'no wifi, no gsm etc' brick I tried again install ios4. Unsuccessful.
    My question is:
    Can I install any ios version with broken baseband? (Ofcourse withot wifi, gsm and so on)


  42. Field of Asians Says:

    Has anyone tried this method ( http://forums.macrumors.com/showthread.php?t=6031… ) to restore a bricked IPhone 3GS to a clean state (to include baseband settings)?


  43. kate Says:

    my serial no is 008 is this ok to unlock?


  44. gauravs05 Says:

    Hey Chris,
    I have the same problem like you. I get the same error -1. If you find a fix please oblige me by letting me know how did you fix it. My eid = gauravs05@gmail.com


  45. anne Says:

    is serial number 849340UTY7H compatible


  46. iphonerepair Says:

    2009 models should be OK, but then again, do it at your own risks!


  47. Rafiq Says:

    great if you are able to unbrick.. it will be of great help if you explain how to unbrick. my email id: rafiqsha@yahoo.co.in


  48. clientt Says:

    my symptoms are a bit different, but wondering if this is the problem. my 3gs is stuck on the reboot after flashing. anyone had this problem? should i disconnect and see what happens?! thanks.


  49. malaz Says:

    Got my iphone bricked before i read this, Are the any fix for it ??
    THX


  50. Malaz Says:

    I have the same problem too. It seems that quite a few people has the problem.
    Please reply to malaz_chahine@hotmail.com when a fix is found.

    THX


  51. clientt Says:

    update: i was able to put it in recovery mode and then do a standard restore via itunes. problem now is activation, as itunes claims there is no SIM and so will not activate it. not sure if that's a legacy of flashing it, or if the phone simply can't read an AT&T SIM outside of the US. (i'm in the UK with an American phone… realize this really can't be the issue, but searching here.) any ideas? thanks.


  52. iphonerepair Says:

    use redsn0w 0.9.10b3 to jailbreak/hacktivate it


  53. Nelson Says:

    Hey beijjngjphonerepair I broke my baseband chip since its the 2011 model cuz i flashed the ipad baseband so can you fix it up for me and let me know the cost


  54. iphonerepair Says:

    email us in Feb 2012!


  55. Lance Says:

    This blows, my phone still has the plastic on it.


  56. DuoCore Says:

    Can I update to 6.15 when my SN is XX952C6W3NP


  57. Chris Says:

    So does this problem only affect the 3GS' with 8 Gigabyte? I have one (produced in the 29th week of 2011) but it has 32 Gig. Is it safe to update to the ipad Baseband?


  58. Lee Says:

    Once your phone is bricked, it is almost impossible to fix. So far I have not found a solution. I upgraded to 5.0.1 with an iPad baseband, downgraded to 4.1, created a custom firmware with sn0wbreeze and restored with iTunes; nothing works. I've been trying to fix my phone for three days now.

    The problem is, we can't connect to the internet to get into Cydia. I think there are some wifi fixes in there. Ultrasn0w may even correct the network not working issue.

    Once you flash the iPad baseband onto your iphone, you will NEVER be able to remove it. I know a lot of people are having issues with restoring with iTunes when you have an iPad baseband. You have to keep trying. When you get the error message, just unplug the phone and plug it back up to iTunes; it will restore eventually. Use Redsn0w to put the phone into pwnd dfu mode first. I've restored an iPhone with the iPad baseband at least 30 times trying to fix this "bricked" iphone issue. iTunes updated my iPhone to 5.0.1 a couple of times, without me even having to point to a custom ispw. You just have to keep trying.

    If I find a solution, I'll post it here.


  59. xfx Says:

    my iphone serial is xx131xx can I unlock with patching baseband?? how to be sure what the baseband chip is?


  60. iphonerepair Says:

    very risky


  61. xander Says:

    i got baseband 05.16.05
    and my serial is xx147xxxxxx
    my firmware is 5.0.1
    kindly tell me pls whether its risky or not to JB my iphone 3gs 8gb.
    pls….


  62. xander Says:

    i got baseband 05.16.05 and i got a xx147xxxxxx serial number
    and my firmware is 5.0.1 will this be safe or risky? please kinly inform me… =(


  63. xander Says:

    what is your serial anyway justin?


  64. Jenelle Says:

    My serial is 1467. I don't think I'm able too, right? if anything, will ultrasn0w release an update for 5.15.05 FW users?


  65. guest Says:

    Well, according to what I know, it is NOT safe to unlock your phone by flashing it with the ipad 6.15 baseband, as your serial number xx147xx eems to indicate manufacturing in 2011, week 47 and that's after 2011 week 28 were Apple seems to have switched baseband chips to incompatible ones … You can JAILBREAK the phone without problems with 5.0.1, of course, but you just can't unlock it a 3gs with baseband 5.16.05 (nor can most 4 and all 4s). AFAIK.


  66. Iphone man Says:

    my serial is xx116xxxxxx is that good? kinda scared


  67. xoie Says:

    Model introduced: 2008
    Production year: 2009

    Safe to jailbreak your unit


  68. Nelson Says:

    I have xxx116xxxx is it good to unlock?


  69. iphonerepair Says:

    50-50


  70. nelson Says:

    But it's before week 28 so is it still good and safe to unlock with ipad baseband?


  71. nelson Says:

    it is risky! dont do it


  72. iphonerepair Says:

    what week is it?


  73. nicolò Says:

    news about unlocking bricked phones?


  74. Nelson Says:

    16th week, it’s ok I sold it lol!


  75. Marcelo Morais Says:

    Estou com meu Iphone 3gs com a mesma imagem acima (brickado). Existe alguma forma de restaura-lo? Nem mandando pra assistência técnica da Apple? Existe alguma chance de te-lo funcionando de volta?


  76. iphonerepair Says:

    English please….


  77. Lezmus Says:

    My Iphone 3gs is 2011 40+ week produced at&t cellphone, and I failed in unlocking it, but I didnt use 6.1.5 Ipad baseband. so should i wait for the jailbreak team to work something out, or better to take it apple store?


  78. iphonerepair Says:

    Take it back to Apple store


  79. Iphone expert Says:

    listen people THIS WILL ANSWER ALL YOUR QUESTIONS IF YOUR PHONE IS COMPATIBLE OR NOT…. its all about the 3rd 4th and 5th number of your serial number. Any phone made week 35 or later in 2011 is not compatible from my experience(I do this for a living). 3rd number is the year. So if your 3rd number is a "0" that means your phone was made in 2010, if its a 9 then 2009; ALL these phones are OK. If your 3rd number is a 1, then that means 2011. At this point check the 4th and 5th number. if they are 35 or over, you are out of luck


  80. Lucy Says:

    Hi, I have iPhone 3gs with serial xx138xxxxxx with baseband 5.16.05 and iOS 5.0.1. Is is safe to jailbreak it without unlocking it? Could I jailbreak it without having to upgrade the baseband since I would not want to brick my phone. Thanks in advance! :)


  81. iphonerepair Says:

    we're working on it


  82. Danful Says:

    More like week 30.


  83. lena Says:

    my serial is 946.is this ok?can someone please tell me.


  84. sobervius Says:

    man can you tell me how did you unbrick the phone plz? ive been lookin for a way to do it plz my email is sobervius@gmail.com


  85. Ishwar Says:

    My iPhone is 16GB 3GS with
    Version: 4.3.3(8J2)
    Modem Firmware: 05.16.02
    Serial Number: 7R9468QA3NP

    Can I flash it with iPad baseband 6.15.00 on 4.3.3 ?


  86. Caroline Says:

    Is the baseband issue applicable to all 3GS phones after week 28 or only on 8GB? I have a 32 GB 3GS phone (week 31) and am in France. If yes, wWhat would be the cost to replace the ship including shipping? Thank you!


  87. Caroline Says:

    Hey did you ever find out? I have a 32GB phone as well…


  88. iphonerepair Says:

  89. vince Says:

    I've got a 3GS 16 GB
    ios 5.0.1
    Baseband 05.16.05
    SN : 8093740D3NP
    I there a risk to use ipad baseband ??


  90. iphonerepair Says:

    this is a 2009 model…. should be ok but at your own risk!


  91. gareth stokoe Says:

    if your phone is in warrenty,restore it to original settings and take it to apple store they will replace it


  92. iphonerepair Says:

    that's right, because there's no proof that you were attempting to unlock it


  93. vince Says:

    thanks
    My iphone is american, I live in Mexico. A friend of mine said me I must pay 120 dollars to unlock it in USA. Is it true ?


  94. Kathy Says:

    I am lucky to find this site before trying to unlock my iPhone (8GB 3Gs, Baseband 05.16.05, SN=87201xxxEDG, just got it 2 weeks ago by renewing 2 years contract). I will wait for latest solution to unlock the iPhone 3Gs with Toshiba baseband chip.


  95. iphonerepair Says:

    looks like yours is freshly produced from the factory!


  96. iphonerepair Says:

    who provides the unlocking service?


  97. Chelito Says:

    Hi! My Iphone 3GS serial number is xx122xxxxxx, i know it is risky, but has anybody else tried to flash the ipad baseband to an Iphone of the same week?


  98. iphonerepair Says:

    if you see the warning from redsn0w, it says week 35…. but you never know…


  99. ELias Mendoza Says:

    Hello can you help me? I have no bluetooth, no wifi, and phone kkeps rebooting? is there a way to get out of this mess? Returning it is not an option.


  100. iphonerepair Says:

    there's no software fix once you get this error


  101. Danful Says:

    Just did xx125xx and it was fine.i did a 130 but locked it up so nothing after xx130xx


  102. iphonerepair Says:

    so anything after week 28 is definitely not safe, in redsn0w it's week 35 and later…


  103. Ryuji18 Says:

    can i use the ipad baseband with this serial number 147?? iphone 3gs 5.16.05, already jailbroked it but I didn’t install the baseband cuz it might bricked.. any advice guys??


  104. iphonerepair Says:

    99% it will be bricked


  105. Eborges Says:

    ##135 im so tempted to do it.


  106. MW2010 Says:

    don't do it i bricked an iphone 3gs XX134.


  107. malaz Says:

    Hi,
    If you know how to unbrick it, please let me know how or post it , email to: malaz_chahine@hotmail.com.

    Thanks


  108. Donovan van hensis Says:

    hi there can u please tel me if miine would be able to ulock it??
    the s/n is 889240xxxxxx
    thanks so much!


  109. iphonerepair Says:

    2009, week 24… should be safe but do it at your own risk!


  110. nicolò Says:

    news for bricked phones??


  111. iphonerepair Says:

    only replacing the chips


  112. nicolò Says:

    and this is already possible?


  113. Nate Says:

    Hi, any recent changesupdates on possible unlockin 3gs (week 44 of 2011) with ios 5.0.1…appreciate your reply…


  114. iphonerepair Says:

    nothing yet, Nate


  115. Marco__Hdz Says:

    so yesterday i did about 10 iphones 3gs 8gb all made before week 25 and they all seem to work well with the ipad baseband. one thing i noticed that all the ones i flashed the chip had this id: 36MY1EE, the chip is found in the location on this picture http://www.beijingiphonerepair.com/wp-content/upl… then i went ahead and opened an iphone which was week 46 and already bricked, removed EMI shield and the id on this chip was: 36MY1EH so im gessing that is the new toshiba baseband chip or whichever manufacturer produces it.


  116. Marco__Hdz Says:

    so what is that chip? because i compared the bricked 3gs and 2 of the unlocked ones and that was the only difference i found.


  117. iphonerepair Says:

    the old one is 36MY1EE, physically it's the same, but the newer one has added security/algorithm check?


  118. Isya Says:

    i have a 3gs xx139, can u tell me if you did it with redsnow or snowbreeze????????????


  119. Isya Says:

    It doesnt matter if you have toshiba or infeneon. To be more technically, Apple updated baseband chip in new iphone versions so if you take it apart and check the chip you can know exactly it can be flashed or not:

    1. Remove the LCD.
    2. Remove the baseband metal shielding.
    3. Check the label on the baseband flash chip.
    If your flash chip is Intel 36MY1EE or non-Intel it is safe to proceed.
    If your flash chip is Intel 36MY1EH, 36MY1EG it will die 100%.


  120. iphonerepair Says:

    Great info, thanks!


  121. iphonerepair Says:

    In other words, 36MY1EE is compatible with iPad baseband, everything else is not


  122. jose Says:

    pls. help me how to unbrick my phone=c josedenhernaez@yahoo.com


  123. Molarte Says:

    So? no one got the way to unbrick the iphone?


  124. josh Says:

    i got iphone 3gs serial 841052 can it b unlocked with ipad baseband


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