So far no hackers or technology are able to circumvent Apple’s tight security of allowing baseband to be downgraded. Apparently, the only and the biggest loophole here is people.
No matter how secure these SHSH servers are, some “insiders” are able to gain access and perform a “clean downgrade” (no pun intended) without the need to do any hardware modification.
The photo above shows a Chinese customer (not ours) who used this service. He intentionally put a tamper proof sticker and it was proven that his iPhone 4 was not disassemble in any way and his baseband was successfully downgraded to 4.10.01. One wonders why not just downgrade to 1.59.00? Maybe they haven’t found a way yet.
How long will this go on? No one knows for sure. Will it have the same fate as AT&T IMEI unlocking which is also purportedly done by insiders? Probably.
Do you have a new iPhone 3GS that you wish to unlock with iPad baseband 6.15.00? Before you do it, please read these important notes first or else you will brick it forever!
UPDATE: Don’t risk breaking your iPhone with the iPad baseband, unlock your AT&T iPhone 3GS permanently. Read more here.
Most of you would have known it by now that Apple updated the chip on all iPhone 3GS made after week 28 of year 2011. The new NOR chip which is mass produced by Intel/Numonyx has the model number of either 36MY1EH or 36MY1EF (see image above for the bottom right chip marked in ‘yellow’ for location of chip on the logic board ). They are not compatible with iPad baseband 6.15.00. It’s exactly the same type of chip used on iPhone 4.
You can check this by looking at your iPhone 3GS’ serial number. The 3rd, 4th and 5th digital of the serial number represent the week and year the logic board was produced.
3rd digit: Year
4th and 5th digits: Week
For instance, if your serial number is xx129xxxxxx then you can tell immediately that the logic board was produced in year 2011, week 29th – not compatible with iPad baseband.
Aside from judging the serial number, the best way to be 100% sure is to physically check the NOR chip on the logic board. This is because you may have a refurbished model that may still have the old chip 36MY1EE that can be safely flashed with iPad baseband. Some people reported that they successfully installed their 3GS with iPad baseband even though the serial number told them otherwise.
How to physically check if you have an older 36MY1EE or newer 36MY1EH/F chip:
Disassemble your iPhone 3GS by following the tutorials on iFixit (Warning! this will void your warranty).
Carefully remove the bottom half of the EMI shield. (see YouTube video below)
3. Take a look at the bottom left corner and see the marking on the chip. If the chip is marked as 36MY1EE, then it’s safe to flash it with iPad baseband. Otherwise, don’t attempt to flash it otherwise you will break your logic board.
If you have attempted to flash it with iPad baseband and your baseband, IMEI, bluetooth and WiFi are now missing, then consider getting it fixed here.
Remember! Always check your serial number and do not attempt to flash it with iPad baseband if it has either the Numonyx 36MY1EH or 36MY1EF NOR chip, or simply unlock it forever if you have an AT&T iPhone using this.
With so many rumors about iPhone 4 unlock going around, it’s really hard to know which one is true. Here’s another for you, one of the developers behind R-SIM unlock for iPhone 4S, claims to have made the unlock for iPhone 4 baseband 4.11.08.
UPDATE: If you have an AT&T iPhone, unlock it permanently and officially using this.
If this is true, looks like they have beaten Gevey this time. Or perhaps the engineer from Gevey left and made his own team to develop this?
This is already advertised on their website. Under the product description, it says:
“Good News for every people who is stucked at 4.11.08 IOS 5,
The long time waiting is over.
Our R-SIM IV is designed for unlocking it, and R-SIM IV will be available in 10 days.
Now we accept review request from famous site.
Email to firstname.lastname@example.org with the email belongs to your site like XXX@yoursite.com, normal email will be ignored.”
Looks like they’re inviting “famous sites” to review this product. I’ve sent them an email, but no responses so far.
There are no other detailed descriptions about this elusive product. I’m also not sure if it would work on baseband 4.12.01. There’s no date mentioned in the page, so I’m not sure when will the “tenth day” be. What I’m really hoping that it’s not an April Fool’s Day prank!
The recommended retail price is $59.00 each.
We are not endorsing this information but do keep an open mind, who knows this will really make “the long time waiting is over” (a bit of Chinglish for you there…)
Tim Cook, Chief Executive Officer of Apple Inc, was reportedly spotted in Beijing’s business district on Monday, igniting speculation as to the reason behind his unexpected visit.
A photo of Cook walking around an Apple store in Xidan, one of most populated shopping districts in the capital, was first put online at noon by a blogger on Sina Weibo. The photo shows Cook wearing a dark-blue sweater and smiling as he listens to a staff member.
STwing, the blogger, claims Cook arrived at the store at 11am. The news has not been officially confirmed by Apple, but if true, this will be Cook’s first visit to China, a move that was never made by Apple’s founder and deceased CEO Steve Jobs.
The Xidan Joy City store is said to be the biggest Apple store in the world in terms of customer flow and sales volume, according to a report by Netease. Sales of the iPhone 4S soared to 380 million yuan on Jan 13, the first day of its launch in China.
The purpose of Tim Cook’s appearance is still unclear. Insiders claim he has come for a meeting with Wang Xiaochu, chairman and chief executive officer of China Telecom Corp. Others speculate the visit is for the iPad trademark case against Proview Technology.
China Telecom, China’s third-largest carrier, started to sell the iPhone 4S in China on Mar 9 following a contract signed with Apple in February, ending the iPhone combo monopoly with China Unicom.
Too bad I missed the opportunity meeting him, well, maybe next time.
Updated your iPhone 4S or iPad 2 to iOS 5.1 and lost your ability to jailbreak it? Don’t worry, hacker ih8sn0w has found a way to downgrade it to iOS 5.0.1 for untethered jailbreak.
iOS hacker iH8sn0w who is the developer of sn0wbreeze and iFaith, has recently tweeted about the ability to downgrade iOS 5.1:
This will give some relief to iPhone 4S and iPad 2 users especially to those who badly need to jailbreak their device. Once downgraded to iOs 5.0.1, these A5 devices can be jailbroken untethered with Absinthe.
According to him, this exploit will also work with A5X devices, such as the New iPad (3). SHSH blobs are still required for this work. However, unlockers will be out of luck as the baseband cannot be downgraded using this method. Current iPhone 4 running iOS 5.0.1 can be unlocked with Gevey Ultra S.
We’re also keen to see if ih8sn0w can make sn0wbreeze available for iPhone 4S. This allows custom firmware to be built while preserving the baseband. If you have an iPhone 4S unlocked with Gevey Ultra S, it’s best not to mess up your iOS otherwise you have to do a full restore to iOS 5.1. This will update your baseband, and you will be stuck with baseband 2.0.10 just like many iPhone 4 users out there who are stuck on baseband 4.11.08 and 4.12.01.
Hackers are definitely busy and it’s good to see that the jailbreaking scene is still vibrant and very much alive!