P20 Pro Write Firmware Failed [Answered] - GSM-Forum

xsacha · 12-22-2020, 19:02

Downgraded firmware so am stuck in fastboot mode. Unable to get to force upgrade mode (no software testpoint).

I switched to hardware testpoint and attempt to write board firmware using latest Huawei Tool.

Used board firmware CLT-L29-BD because my device is CLT-L29 but it actually downloaded firmware for Charlotte-AL00.

Code:

Starting Write Firmware(Board mode)
Searching HUAWEI USB COM 1.0 port...
Phone connect successfully
Writing ‪XLOADER‬ partition..
Writing ‪UCE‬ partition..
Error: Failed write ‪UCE‬ partition

Write Firmware(Board mode) failed.
Performed by ‪1.2.3‬ Software version.

Also, if I try to switch to fastboot mode from testpoint I get:

Code:

Job ID: 00000000004D06AD
2020-12-22 14:32:04 GMT -------------------------------------------------
Starting Connect
Selected phone model: ‪CLT-L29‬
Searching HUAWEI USB COM 1.0 port...
Writing bootloader KIRIN970_A8.1_V0...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Writing ‪UCE‬ partition...
Error: Failed write ‪UCE‬ partition
Writing bootloader KIRIN970_A8.1_V1...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Error: Failed write ‪XLOADER‬ partition
Writing bootloader KIRIN970_A8.1_V2...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Error: Failed write ‪XLOADER‬ partition
Writing bootloader KIRIN970_A8.1_V3...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Error: Failed write ‪XLOADER‬ partition
Writing bootloader KIRIN970_A8.1_V4...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Error: Failed write ‪XLOADER‬ partition
Writing bootloader KIRIN970_A8.1_V5...
Initializing remote service connection...
Writing ‪xloader‬ partition...
Error: Failed write ‪xloader‬ partition

Connect failed.
Performed by ‪1.2.3‬ Software version.

Any ideas?

Octopus support · 12-23-2020, 09:39

Hello.

Please repeat write firmware operation without battery and post here results.

xsacha · 12-23-2020, 20:21

Without battery was the first thing I tried and had same result.

xsacha · 12-24-2020, 07:35

Repeated again with battery unplugged:

Code:

Selected phone model: CLT-L29
Partial flashing mode was selected!
2020-12-24 06:33:44 GMT -------------------------------------------------
Starting Write Firmware(Board mode)
Searching HUAWEI USB COM 1.0 port...
Phone connect successfully
Writing ‪XLOADER‬ partition..
Writing ‪UCE‬ partition..
Error: Failed write ‪UCE‬ partition

Write Firmware(Board mode) failed.
Performed by ‪1.2.3‬ Software version.

xsacha · 12-24-2020, 08:00

Thanks!!!
I kept trying and found that it is the Huawei Board Mode (*.APP Firmware File) works when power is disconnected. The .XML doesn't work.

Code:

2020-12-24 06:53:29 GMT -------------------------------------------------
Starting Write Firmware(Board mode)
Searching HUAWEI USB COM 1.0 port...
Writing bootloader KIRIN970_A8.1_V0...
Initializing remote service connection...
Writing ‪XLOADER‬ partition...
Writing ‪UCE‬ partition...
Writing ‪FASTBOOT‬ partition...
Bootloader Update successfully
Rebooting to fastboot mode...
Searching Fastboot devices...
Found a fastboot device: WCR0218428000754

Device Model: ‪CLT-L29‬
System: ‪CLT-L29 9.0.0.286(C432E5R1P9)‬
MEID: ‪xxxxxxxxxx
IMEI A: xxxxxxxxx
IMEI B: ‪xxxxxxxxx
S/N: ‪xxxxxxxxxx
Writing PTABLE partition...



Writing PTABLE partition...
Writing XLOADER partition...
Writing FASTBOOT partition...
Writing DTS partition...
Writing DTO partition...
Writing VECTOR partition...
Writing FW_LPM3 partition...
Writing HHEE partition...
Writing TEEOS partition...
Writing TRUSTFIRMWARE partition...
Writing SENSORHUB partition...
Writing FW_HIFI partition...
Writing KERNEL partition...
Writing VBMETA partition...
Writing MODEMNVM_UPDATE partition...
Writing MODEMNVM_CUST partition...
Writing RECOVERY_RAMDISK partition...
Writing RECOVERY_VENDOR partition...
Writing RECOVERY_VBMETA partition...
Writing ERECOVERY_KERNEL partition...
Writing ERECOVERY_RAMDISK partition...
Writing ERECOVERY_VENDOR partition...
Writing ERECOVERY_VBMETA partition...
Writing ENG_VENDOR partition...
Writing ENG_SYSTEM partition...
Writing HDCP partition...
Writing CACHE partition...
Writing SYSTEM partition...
Writing 1 chunk from 5...
Warning: Writing SYSTEM partition failed
Connecting to server...

It seems to get stuck at connecting to server but no network traffic is happening.

Octopus box · 12-24-2020, 09:59

Hello.

Please, read Software manual attentive, we've manetioned about all the issues and all the steps

xsacha · 12-24-2020, 15:38

Sorry I couldn't find these instructions. Do you have link to software manual?

Octopus box · 12-24-2020, 16:06

Quote:

20. Write Firmware (Board Mode *.APP File)
This method allow only You to revive your device or to put your device into Fastboot/Upgrade mode.
Important: Please, use this method, only if your device can`t be put into any other mode, except HUAWEI USB COM 1.0!
Important: You should use firmware with same revision as it now in your device(example: If firmware in your device with Android 9 revision, then You need to write firmware with Android 9 revision!);
Plase, reflash your device via Upgrade mode, if your device doesn`t work propery after it was reflashed via HUAWEI USB COM 1.0!
To perform Write Firmware operation in "Board Mode", follow the next steps:
Select your phone model from the list;
Put phone via Test Point to Factory Mode(HUAWEI USB COM 1.0);
Check "Huawei Board Firmware(*.APP Firmware File)" mode on Write Firmware tab;
Select proper app firmware file(s);
Press "Write Firmware" button;
Wait until operation ends;
Reflash the device in Upgrade Mode if your device does not work properly.

Plase, reflash your device via Upgrade mode, if your device doesn`t work propery after it was reflashed via HUAWEI USB COM 1.0!

12-23-2020, 09:39	#2 (permalink)
Octopus support Product Supporter Join Date: Jan 2019 Location: USA, New York Posts: 10,182 Member: 2891705 Status: Offline Thanks Meter: 2,151	Hello. Please repeat write firmware operation without battery and post here results.

12-23-2020, 20:21	#3 (permalink)
xsacha Junior Member Join Date: Dec 2020 Location: Australia Posts: 5 Member: 2975870 Status: Offline Thanks Meter: 0	Without battery was the first thing I tried and had same result.

12-24-2020, 09:59	#6 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,877 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,418	Hello. Please, read Software manual attentive, we've manetioned about all the issues and all the steps

12-24-2020, 15:38	#7 (permalink)
xsacha Junior Member Join Date: Dec 2020 Location: Australia Posts: 5 Member: 2975870 Status: Offline Thanks Meter: 0	Sorry I couldn't find these instructions. Do you have link to software manual?