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| iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides. |
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07-17-2017, 12:39
| #1 (permalink) |
| Junior Member Join Date: Jun 2017
Posts: 8
Member: 2727553 Status: Offline Thanks Meter: 1 | iPhone 6 stuck at restore, no error message I'm doing board repair as a hobby, just to see, what is fixable and what is not. Now I got an iPhone 6 that is not able to restore. I tried the restore in iTunes and in 3utools. iTunes will stuck for ever (I let it sit for 2 hours without progress), 3utools will stop with a timeout at 20 percent ("Sending FDRTrustData"). The restore gets until the apple logo with progress bar and then nothing moves, no error message from iTunes. The device is still recognized by the computer. I tried on another PC, and other USB cables, new battery all the same. At first I tried another connector - still the same. Then changed tristar - still the same. What I noticed yesterday was that in the moment where everything stops (when the apple logo with the progressbar appear) the PP5V0_USB drops from 5V to about 4.5V. At this time the phone draws about 0.5 amps over the USB. PP3V0_TRISTAR, PP1V8_SDRAM, PP_VCC_MAIN are all normal readings. No signs for liquid damage. Any one an idea what it could be/what I could check next? Thanks and greetings |
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07-17-2017, 22:33
| #2 (permalink) | |
| Freak Poster  Join Date: Mar 2017
Posts: 387
Member: 2691507 Status: Offline Thanks Meter: 100  | Quote:
Check the logs and you'll be able to see where it stops. Do a Google search for that error number see what you find, thats a good start. ie "Apple error (4014)" | |
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07-18-2017, 05:20
| #3 (permalink) | |
| Junior Member Join Date: Jun 2017
Posts: 8
Member: 2727553 Status: Offline Thanks Meter: 1 | Well, as I have written, I donīt get an error message out of iTunes. It just keeps running forever (I let it running about 2 hours and then plugged the phone off): Quote:
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07-18-2017, 06:22
| #4 (permalink) | |
| Freak Poster Join Date: Mar 2017
Posts: 387
Member: 2691507 Status: Offline Thanks Meter: 100 | Quote:
[06:22:43.0541] CryptoGenerateRSAKeys: SecKeyCreateRSAPrivateKey -> 0x1000db5e8 [06:22:43.0541] CryptoGenerateRSAKeys: SecKeyCreateRSAPublicKey -> 0x1000db5e0 [06:22:43.0541] bbupdater: 1497501904.007[0.0]BBUpdaterController::: Entering cmdCopyIdentifier [06:22:43.0541] created HTTP FDR client 0x103624480 [06:22:43.0541] created local FDR client 0x1036266d0 [06:22:43.0541] Received response without expected RESTORED_FDR_TRUST_DATA [06:22:43.0541] Found local trust object, computing digest.. [06:22:43.0541] Local trust object digest DOES match AP ticket. [06:22:43.0541] Not enabling SSO for FDR [06:22:43.0541] RestoredFDRCreate() returned 0 [06:22:43.0541] FDR is supported on this device [06:22:43.0541] [04:45:04.0045-GMT]{5>6} CHECKPOINT END: RESTORED:[0x0616] fdr_create what is the size of the log?, I'm not sure if you are pass "Finished DFU Restore Phase: Successful" two times. I can't find the RESTORED_FDR_TRUST_DATA entry in other logs exept for the iPad Pro. If you read above it has to do with encryption. Did you swap hardware? | |
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07-18-2017, 07:55
| #5 (permalink) | ||
| Junior Member Join Date: Jun 2017
Posts: 8
Member: 2727553 Status: Offline Thanks Meter: 1 | Hi! The size of the complete logfile is 30 KB. I got the phone with this error, the description was "cannot restore". As I opened the phone I could not find any evidence that someone worked before on it. The shields were not removed before. So I changed tristar because I thought it may have some problems with the USB communication but it did not had any effect. Tristar is the only chip that I changed. If I compare the log file from this phone to a log file from a phone where restore worked, I don't find anything obvious. The phone that worked got to the same point and then started sending payload: phone that worked: Quote:
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07-18-2017, 14:36
| #6 (permalink) |
| Freak Poster  Join Date: Oct 2007
Posts: 276
Member: 617356 Status: Offline Thanks Meter: 12 | me to Iphone is in recovery mode and the screen is unresponsive unless i plug it in and start the update and restore on itunes then the apple symbol shows up . But half way through the restore is gets stuck on "Verifying Iphone restore |
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07-19-2017, 06:14
| #8 (permalink) | |
| Freak Poster Join Date: Mar 2017
Posts: 387
Member: 2691507 Status: Offline Thanks Meter: 100 | Quote:
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07-19-2017, 07:13
| #9 (permalink) | |
| Junior Member Join Date: Jun 2017
Posts: 8
Member: 2727553 Status: Offline Thanks Meter: 1 | Quote:
The phone was send to me in a normal envelop, not good packaged. I can imagine, that the envelop with the phone was might dropped during delivery. There might be a cracked solder-joint somewhere. I have also tested all the caps for a short but there is none. So I now re-flowed the baseband chip without any change. The other possibilities would be NAND and EEPROM, isn't it? But if the NAND connection would be bad, there wouldn't be a serial number displayed in iTunes/i would get some error message regarding NAND when I restore? | |
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07-23-2017, 23:00
| #11 (permalink) | |
| Freak Poster Join Date: Mar 2017
Posts: 387
Member: 2691507 Status: Offline Thanks Meter: 100 | Quote:
So the owner might have jailbreak the phone. You should be able to update to new IOS with iTunes. If you have access to a Nand programmer try erasing the Nand and restore just the basic SN, Wifi/BT MAC, model, etc, etc Something still being left, I don't think jailbreak changes anything else, like eeprom. Apple with every new IOS update pushes new hardware check points, specially around their encryption. Stop changing parts, you might short or break something else. I have burn a Samsung phone before installing the wrong app, I used a program that should have reset the root display so that it didn't show it was rooted before, it was for a similar version and it burn the phone, till now I still have it on a draw. (phone is a Korean version <-- with tv antenna) stuff not here yet  | |
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11-11-2017, 17:24
| #12 (permalink) |
| No Life Poster  Join Date: Jul 2016
Posts: 536
Member: 2598526 Status: Offline Thanks Meter: 52 | Ever resolve this? I’m facing same issue with an iPhone 6 that was never worked on If I try restoring with 3utools it hangs at “sending FDRTrust data” hangs forever and never quits unless I unplug. What’s FDRTrust data? |
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11-12-2017, 15:50
| #14 (permalink) | |
| No Life Poster Join Date: Jul 2016
Posts: 536
Member: 2598526 Status: Offline Thanks Meter: 52 | Quote:
Can you make a list of things youve tried so I can skip them and try something else | |
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11-12-2017, 16:00
| #15 (permalink) |
| Junior Member Join Date: Jun 2017
Posts: 8
Member: 2727553 Status: Offline Thanks Meter: 1 | - other PC - new original USB cable - external powered USB Hub - changed lightning flex/port - changed tristar - changed tigris - reballed NAND - reballed baseband IC - changed baseband PMIC - changed PMIC After all these changed still get the same error. Maybe some internal NAND problem (don't have a NAND programmer). If you find a solution, I would be glad if you share it. Maybe for the next phone with the same problem... Greetings |
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