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Go Back   GSM-Forum > Product Support Sections > Special Solutions / Services / WebShop > GPGIndustries Support section > Distributed Devices by GPG > GCPro Key

 
 
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Old 01-09-2017, 21:52   #1 (permalink)
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Question [HELP] How to Repair G920A - Baseband / IMEI = UNKNOWN


Hello,

Can someone please explain to me the method to repair "Unknown Baseband and Unknown IMEI" on G920A? The phone is at 6.0.1 PG1 Firmware. I tried to reflash stock firmware and that did not change anything. IMEI and BASEBAND are stuck at UNKNOWN.

I tried to flash CERT File to this phone...but I get this error....

Using Version...1.0.0.0041
Selected Port ssudmdm0000 = COM15
Selected Model SM-G920A
Selected Task SAM CERT WRITE USB

ALL SAMSUNG CERT WRITE STARTED..

Searching Phone Please wait...

Phone Found Wait...
TEST MODE OK..
Model := G920A
VER := G920AUCS4CPG1/G920AATT4CPG1//G920AUCS4CPG1
Can use only on damaged phone stop here.

!!! FAIL !!!!
Total Time Take...00:01:35
Log Saved

How do I fix this device? Please Help. Thanks!!
 
Old 01-09-2017, 22:59   #2 (permalink)
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I tried to Reset EFS and Write CERT File. Still error. Tried to reflash firmware again, now phone is stuck in Recovery Mode with DRK error. How do I fix DRK error when G920A is stuck in recovery Mode and wont fully boot? I forgot EFS Wipe Messed up DRK
 
Old 01-09-2017, 23:30   #3 (permalink)
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Quote:
Originally Posted by GTrader View Post
I tried to Reset EFS and Write CERT File. Still error. Tried to reflash firmware again, now phone is stuck in Recovery Mode with DRK error. How do I fix DRK error when G920A is stuck in recovery Mode and wont fully boot? I forgot EFS Wipe Messed up DRK
the important u must fix unknowBB first after that Imei now ur phone have Baseband
 
Old 01-10-2017, 05:39   #4 (permalink)
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Hello
If you have baseband unknow by flashing its only possible because of you flashed older then bootloader rev version. for example U5 > U4

Second option is flash combination same rev
use exynos efs reset
use imeicert write
use drk repair
reflash stock and check.
 
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Old 01-10-2017, 14:34   #5 (permalink)
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Thanks for the info. My phone is stuck in recovery though with DRK error. How do I repair DRK if phone is stuck in recovery mode and wont fully boot? Is the only option to find combination file?
 
Old 01-10-2017, 14:52   #6 (permalink)
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Quote:
Originally Posted by GTrader View Post
Thanks for the info. My phone is stuck in recovery though with DRK error. How do I repair DRK if phone is stuck in recovery mode and wont fully boot? Is the only option to find combination file?
You must use a combination file to repair DRK, obviously things were made worse by wiping EFS when your original problem would have been solved by flashing the latest firmware version.
 
Old 01-10-2017, 17:37   #7 (permalink)
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You must use a combination file to repair DRK, obviously things were made worse by wiping EFS when your original problem would have been solved by flashing the latest firmware version.
Yes I know I really messes that one up -__- . I have downloaded combination file and phone boots up fine with Factory Binary. G920A Combination file is @ 5.0.2 Android Version with build number PF1. I am trying to use DRK_Repair service but my phone is not detected. I have UART Port selected and phone is in *#0808# TEST MODE.

Anything I can do to get this DRK fixed? I keep trying on GCPROKEY but keeps saying not found I know port is correct at cable is working fine.

Using Version...1.0.0.0041
Selected Port VCP0 = COM81
Selected Model SM-G920A
Selected Task SAMSUNG DRK FIX

Started Samsung DRK Fix...

No reply on samsung mode.. DIAL *#0*# AND TRY AGAIN...

!!! Fail !!!!
Total Time Take...00:00:07
Log Saved
 
Old 01-10-2017, 17:53   #8 (permalink)
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I have UART Port selected and phone is in *#0808# TEST MODE.
I meant to say *#0*#
 
Old 01-10-2017, 18:22   #9 (permalink)
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Quote:
Originally Posted by GTrader View Post
I meant to say *#0*#
Just keep repeat steps(*#0*# plug in plug out make sure you didn't tripped Knox too) until uart connection work, report back if anything....
 
Old 01-11-2017, 17:26   #10 (permalink)
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follow the help file of GC pro , if you need remote help do not hesitate to PM Me
 
Old 01-11-2017, 21:51   #11 (permalink)
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Originally Posted by najeeb2020 View Post
follow the help file of GC pro , if you need remote help do not hesitate to PM Me
I understand how to do this process, I just cannot get my phone to be detected by GCPROKEY. UART port is working, cable is working, phone is in *#0*# mode. But phone will not detect for DRK repair. When I try to do IMEI CERT WRITE, it tells me "Can use only on damaged phone stop here." error.
 
Old 01-27-2017, 16:00   #12 (permalink)
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** PROBLEM SOLVED ** - I had to flash PI1 Combination File in order to fix DRK Issue. The other combination file firmware was too low which was causing IMEI = Unknown which was causing UART Port not to work. Thanks for the help everyone.

Thread Closed
 
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Old 07-01-2017, 20:58   #13 (permalink)
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How do i root on combonation pi1 g910a file?

hi im in a mess , unknown baseband so im in combo file pi1 g920a 5.0.2 what to do next? i tried drk fix but it cant find phone uart im in *#0*# ?
how do i root to write cert?
 
 

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