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iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 07-17-2017, 13:39   #1 (permalink)
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iPhone 6 stuck at restore, no error message


Hi together!
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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Old 07-17-2017, 23:33   #2 (permalink)
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Quote:
Originally Posted by bios2000 View Post
Hi together!
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
Most of the time iTunes will give you an error when doing a restore, some kind of number.
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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Old 07-18-2017, 06:20   #3 (permalink)
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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:
[17:35:40.0413] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:36:35.0064] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0538] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0763] Completed checkpoint id: 0x613
[17:37:21.0763] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0966] Completed checkpoint id: 0x614
[17:37:21.0977] Completed checkpoint id: 0x654
[17:37:21.0981] Completed checkpoint id: 0x615
[17:37:24.0488] no override trust object found
[17:37:24.0515] Completed checkpoint id: 0x616
[17:37:24.0563] Completed checkpoint id: 0x617
[17:37:24.0598] Completed checkpoint id: 0x618
[17:37:24.0604] Completed checkpoint id: 0x619
[17:37:27.0148] Completed checkpoint id: 0x61A
[19:46:10.0218] RestoreOS mode device disconnected <- I plugged the phone off
[19:46:10.0218] RestoreOS device removed before restored completed
[19:46:10.0218] recv(5364, 4) failed: connection closed
[19:46:10.0218] unable to read message size: -1
[19:46:10.0218] unable to read message from device
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Old 07-18-2017, 07:22   #4 (permalink)
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Quote:
Originally Posted by bios2000 View Post
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):
The only part I was able to find related to your error is this.


[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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Old 07-18-2017, 08:55   #5 (permalink)
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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:
[19:20:07.0611] requested restore behavior: Erase
[19:20:07.0626] value query for 'HardwareModel' returned 'N71AP'
[19:20:07.0629] requested restore behavior: Erase
[19:20:07.0630] Established proxy for device ID 121
[19:20:07.0726] <Restore Device 00000178018AD640>: operation 35 progress -1
[19:20:07.0726] requested restore behavior: Erase
[19:20:10.0009] <Restore Device 00000178018AD640>: operation 28 progress -1
[19:20:10.0014] <Restore Device 00000178018AD640>: operation 58 progress -1
[19:20:17.0799] <Restore Device 00000178018AD640>: operation 15 progress -1
[19:20:25.0128] no override trust object found
[19:20:34.0545] <Restore Device 00000178018AD640>: operation 29 progress -1
[19:20:34.0550] <Restore Device 00000178018AD640>: operation 29 progress -1
[19:20:34.0556] <Restore Device 00000178018AD640>: operation 29 progress -1
[19:20:35.0117] <Restore Device 00000178018AD640>: operation 11 progress -1
[19:20:35.0248] <Restore Device 00000178018AD640>: operation 12 progress -1
[19:20:35.0473] <Restore Device 00000178018AD640>: operation 12 progress -1
[19:20:36.0348] <Restore Device 00000178018AD640>: operation 12 progress -1
[19:20:36.0496] <Restore Device 00000178018AD640>: operation 13 progress 0
[19:20:46.0513] <Restore Device 00000178018AD640>: operation 13 progress 1
[19:20:46.0513] ASR progress: Initialized communication with client
[19:20:47.0752] <Restore Device 00000178018AD640>: operation 13 progress 5
[19:20:47.0752] ASR progress: Starting to send payload
[19:20:48.0664] <Restore Device 00000178018AD640>: operation 13 progress 6
[19:20:48.0664] ASR progress: Sending payload
the phone I working on:
Quote:
[17:35:35.0904] requested restore behavior: Erase
[17:35:35.0910] value query for 'HardwareModel' returned 'N61AP'
[17:35:35.0911] requested restore behavior: Erase
[17:35:35.0911] Established proxy for device ID 379
[17:35:36.0033] Completed checkpoint id: 0x655
[17:35:36.0042] Completed checkpoint id: 0x604
[17:35:36.0051] Completed checkpoint id: 0x608
[17:35:36.0060] <Restore Device 000002237305C9A0>: operation 35 progress -1
[17:35:36.0060] requested restore behavior: Erase
[17:35:38.0953] Completed checkpoint id: 0x609
[17:35:38.0977] Completed checkpoint id: 0x60B
[17:35:38.0993] Completed checkpoint id: 0x60C
[17:35:39.0004] <Restore Device 000002237305C9A0>: operation 28 progress -1
[17:35:39.0020] Completed checkpoint id: 0x60D
[17:35:39.0037] Completed checkpoint id: 0x60E
[17:35:39.0093] Completed checkpoint id: 0x60F
[17:35:39.0137] Completed checkpoint id: 0x65C
[17:35:39.0166] Completed checkpoint id: 0x610
[17:35:40.0399] Completed checkpoint id: 0x611
[17:35:40.0409] Completed checkpoint id: 0x612
[17:35:40.0413] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:36:35.0064] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0538] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0763] Completed checkpoint id: 0x613
[17:37:21.0763] <Restore Device 000002237305C9A0>: operation 15 progress -1
[17:37:21.0966] Completed checkpoint id: 0x614
[17:37:21.0977] Completed checkpoint id: 0x654
[17:37:21.0981] Completed checkpoint id: 0x615
[17:37:24.0488] no override trust object found
[17:37:24.0515] Completed checkpoint id: 0x616
[17:37:24.0563] Completed checkpoint id: 0x617
[17:37:24.0598] Completed checkpoint id: 0x618
[17:37:24.0604] Completed checkpoint id: 0x619
[17:37:27.0148] Completed checkpoint id: 0x61A
[19:46:10.0218] RestoreOS mode device disconnected
[19:46:10.0218] RestoreOS device removed before restored completed
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Old 07-18-2017, 12:55   #6 (permalink)
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Get your iphone to Yaantra, Experts there will solve all your problems considering your Smartphone, They have Fastest Reparing time & they also deliver your phone to your doorsteps. Checkout their website (Yaantra) for more info
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Old 07-18-2017, 15:36   #7 (permalink)
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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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Old 07-18-2017, 15:43   #8 (permalink)
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And what are you getting in your logfile form iTunes?
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Old 07-19-2017, 07:14   #9 (permalink)
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Quote:
Originally Posted by bios2000 View Post
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:


the phone I working on:
I know you are saying the iphone had no indication of ever been worked on before, but there might be a broken connection somewhere. The restore is stopping in the encryption part of it. check flex cable to home button, look if short a burn cap.
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Old 07-19-2017, 08:13   #10 (permalink)
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Quote:
Originally Posted by cisco2017 View Post
I know you are saying the iphone had no indication of ever been worked on before, but there might be a broken connection somewhere. The restore is stopping in the encryption part of it. check flex cable to home button, look if short a burn cap.
It's a good hint, that it's the encryption part, where it stops. Thanks. I just talked to the seller. He told me, that he got an error message, when he tried to restore it (error 3194, something about the network connection). As it arrived here, it freezes now during restore.

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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Old 07-23-2017, 20:09   #11 (permalink)
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So i just removed the NAND, reballed it and put it on again. I have still the same behavior than before... So no cracked solder joint under the NAND...
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Old 07-24-2017, 00:00   #12 (permalink)
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Quote:
Originally Posted by bios2000 View Post
So i just removed the NAND, reballed it and put it on again. I have still the same behavior than before... So no cracked solder joint under the NAND...
Error (3194) is when iTunes can't connect or wrong version of Firmware, not signed version, etc, etc ...

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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Old 11-11-2017, 17:24   #13 (permalink)
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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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Old 11-12-2017, 09:57   #14 (permalink)
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No, tried several things, including new baseband PMIC and baseband reball. But nothing resolved the error. So I finally decided to give up on this.
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Old 11-12-2017, 15:50   #15 (permalink)
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Quote:
Originally Posted by bios2000 View Post
No, tried several things, including new baseband PMIC and baseband reball. But nothing resolved the error. So I finally decided to give up on this.


Can you make a list of things you’ve tried so I can skip them and try something else
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