Well, we hate to boast but our team has successfully downgraded an iPhone 4 from baseband 4.11.08 to 1.59.00. Another milestone for the team!
Karen, a US-expat who is currently based in Harbin, China is one of the many iPhone 4 users who accidentally updated their baseband to 4.11.08. Karen was able to downgrade to iOS 4.3.3 using her saved SHSH, but of course that did not downgrade her baseband. She sent her iPhone via SF-Express over the weekend.
The photo above shows her phone which has been successfully downgraded to 1.59.00, jailbroken on iOS 4.3.3 and already unlocked with ultrasn0w.
She was previously using a Gevey Pro Turbo SIM (not a genuine one, though as you can see from the picture) but she can throw that away now. I’m trying to get Karen to write up her experience once she receives it as currently the iPhone is on its way back from Beijing to Harbin. Update November 4, 2011: Her iPhone had arrived safely!
I reminded Karen not to update it directly via iTunes because replacing the chips does not make it a factory-unlocked iPhone. If she needs iOS 5 installed, she must always use custom firmware in order to preserve the baseband.
Karen just sent me an email with the following feedback:
“I’m from Harbin China I upgraded my iPhone to iOS 5.0 then was able to downgrade to 4.3.3 but my Gevey chip stopped working because the (modem) firmware had been upgraded. Sent my phone to Richard. Within the week I got my phone back 1.59 firmware unlocked with ultrasnow no gevey needed anymore. He’s the iPhone god! Very sweet and patient an even helped me with a few things once his job was done. Awesome service! Glad I found him.”
Another feedback from our customer named Robbert, an expat based in Guangzhou, China. He shipped his iPhone 4 to us which was locked to 4.11.08. It’s been downgraded to 1.59.00.
This is very similar to our iPhone 4 baseband chip replacement service, except for this case you must have a “donor” baseband chip.
I’m not here to promote this service but it’s just to show to everyone that there’s nothing “The Fruit” can do to stop hackers and people like us from doing any unlocking. So the next time when someone’s saying “SOL” to you, don’t believe him/her.
Is this something you will be offering soon? Will this be a software based or hardware based service?
we are the hardware people
When you say downgraded… you mean software wise? or via changing the chip?
we're only doing hardware hacks
how did you guys do this ?
software or chip ?
read again please, it's a hardware hack
How much does this service cost?
the same as http://www.beijingiphonerepair.com/hack/iphone-4-… but +$15 for baseband 1.59.00
You guys are great! keep up the great work! Might order once ios 5 is j/b
of course nothing beats software unlock like ultrasn0w right?
thanks for your support!
so the chip has to be replaced? more info please?
both baseband and intel NOR chips
"This is very similar to our iPhone 4 baseband chip replacement service, except for this case you must have a “donor” baseband chip."
Do we have to provide the baseband chip?
we do have them but it's rare… and if you can find it for yourself it's even better
what do you mean by "you must have a donor" ?
What do you mean by a donor chip?
meaning a chip taken from a broken logic board
why you dont give us a tool to unlock why do you want that we buy this ?
there's no tool, you need to work on replacing the chips on board
wow good shit but the cost is to high, gonna wait for the software, keep up the good work
hardware hacks are like that unfortunately, hopefully there's software unlock available…
How much is this service including shipping from GERMANY, are there TAX FEES to pay?
http://www.beijingiphonerepair.com/store/#ecwid:c…
So what should I do? Are u telling me to downgrade to 4.3.1 baseband 1.59 n then unlock? What do u recommend ? Should I wait for a software to be realesed or what?
this is the only solution available now, software unlock might come eventually (god knows when), it's been more than a year since the last unlock for iPhone 4 was out
Pingback: iPhone 4 Baseband Chip Downgrade from 4.11.08 to 4.10.01 Available Soon | BeijingiPhoneRepair.com
How do I downgrade?
replace the baseband chip and NOR chip
I thought I just had to downgrade with the basic stuff for example, jailbreak and unlock .thats it?
how we all wish is that simple
What specifacly is the baseband chip and nor chip?
The image in this post shows the two chips: http://www.beijingiphonerepair.com/hack/iphone-4-…
Why not just make the phone factory unlocked by changing the chip where the AT&T lock is stored?
verification is done via iTunes through Apple server, only if the phone's IMEI or unique ID is marked as "factory unlocked" in Apple's database then it can become factory unlocked
So what will happen with the new IMEI you give after the upgrade, I guess it cannot be locked to a carrier already? Will it just be the first SIM to activate the phone?
use redsn0w or custom hacktivated firmware to activate it
Can you program any IMEI on the chip? If you programmed with a factory unlocked IMEI the phone would be accepted by Itunes as unlocked?
technically that sounds feasible but it's not yet possible to do it on an iPhone 4 chip
how much in RMB would this cost? xie xie
it's here: http://www.beijingiphonerepair.com/store/#ecwid:c…
see <a href="http://www.xe.com” target=”_blank”>www.xe.com for latest rates
i upgraded my iphone to ios 5 and now my gevey sim is not working, is there going to be a solution and when..thank you
this is the only solution for now
Hey Hi,
I am from India an iphone4 user which runs using gevey sim. i upgraded my iphone4 to ios5 direct from itunes & now my phone is in swtiched off mode. will you be able to repair for me? my iphone4 box shows that my iphone4 is made in china. let me know if you can help me & a way forward like cost etccc..
you can reach me anytime @ inaamlucky@gmail.com
Hi , i'm from Russia , and i got iphone 4 running the ios 5 with 04.11.08 baseband , cant unlock that one bustard , can you help me with that one ?
My e-mail : maxim_xaker@mail.ru
Best regards
Are there any disadvantages with the BB 01.59.00 running iOS5?
5.0 is tethered jailbreak
Ok if I downgrade to 01.59.00 I won’t be able to send or receive pictures threw text?
absolutely, it's the only iPhone 4 baseband that can be unlocked with ultrasn0w
Is it possible to clone them, so we don't have to use a donor ship? Similar to baseband 04.10. Its very complicated to get a donor ship almost impossible , is it possible to manufacture them?
not possible at this stage
when the unlock comes for the iPhone 4s will you guys be able to do the same thing to the iPhone 4s?
we need time to test and experiment
is it still available to downgrade it to 1.59.00?
We ran out of 1.59.00, only 4.10.01 left
My current second hand iPhone 4 4.11.08 has a locked serial (because it was replaced). Will this fix it?
what do you mean by locked serial?
My iPhone is probably officially reported as missing or stolen or broken, and thus replaced. They then block the serial/IMEI so it should't or can't be used anymore.
When I bought this phone I did not know of course, I thought it was simply an imported 'carrier locked' phone and had hopes to unlock it.
chips replacement will change the IMEI and should give your phone a second chance
I need to keep my original imei number intact as service providers block the service otherwise. Will i be able to keep my imei number?
not possible for now
Hi Richard. Is it possible to locate Carrier Lock information in iPhone 4 and edit it for unlocking purpose?
many tried that long time ago, it doesnt work
Hi I m getting advice from your site quite a while now and I think you have great sence of responsibility for your readers/ followers.
My questions are:
A. Is possible to replace 6.15.00 bb in order to fix gps issue on 3GS?
B. Is possible to downgrade 4.11.08 bb to 1.59.00 via chip replacement?
A – yes, once the chip is downgraded to 5.13.04 you will get your GPS back
B – yes, as long as you can get the chips or you use our service