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Go Back   GSM-Forum > Product Support Sections > Hard/Software Products (official support) > DC Unlocker

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Old 10-25-2021, 13:15   #1 (permalink)
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Unhappy HCU Client v1.0.0.0378 fail with Huawei P20 YAL-L21


I have a Huawei P20 YAL-L21 Phone with FRP.
If i try unlock FRP via HCU i have this log:

Code:
25.10.2021 15:05:41
HCU Client   v1.0.0.0378
Account: 0xxxxxxx

Before operation turn phone to TestPoint mode:
Turn off phone, then short TestPoint on phone pcb
and plug USB cable
Wait for device "HUAWEI USB COM 1.0" in Ports


Read phone info
2021-10-25 15:05:41.069 Selected Cpu/Bootloader - Kirin980_P1_V3
2021-10-25 15:05:41.072 Connecting to server...
2021-10-25 15:05:41.418 Connected!
2021-10-25 15:05:42.216 Find device COM38, handle 10040
BOOTLOADER selected to update:Kirin980_P1_V3
downloading file Kirin980_P1_V3_0.dtwork...
downloading file Kirin980_P1_V3_2.dtwork...
downloading file Kirin980_P1_V3_3.dtwork...
downloading file Kirin980_P1_V3_4.dtwork...
downloading file Kirin980_P1_V3_6.dtwork...
2021-10-25 15:07:08.390 Waiting for device REMOVAL/INSERTION...
2021-10-25 15:07:23.547 Operation timeout
2021-10-25 15:07:23.554 Operation timeout
Memo log saved to D:\-- Archive --\- Software -\HCU_Client\Logs\20211025_150723_HCU_ReadInfo_.txt
Phone don't enter to fastboot mode... maybe i need other bootloader?
Phone with latest android version... Or maybe neet downgrade or some other operation? Connect via testpoint with modified cable (without this cable testpoint dont work).

DC Phoenix also does not transfer this phone to fastboot via testpoint:

Code:
DC Phoenix 0.0.0.164
user:01xxxxxx

Device detected:
COM38: HUAWEI USB COM 1.0 (COM38)
BOOTLOADER File to update: Kirin980_P1_V3
25.10.2021 15:03:31 Starting to write device...

Process identifier:35220710


Writing bootloader...
Step 2...
Step 3...
Step 4...
Step 5...
Step 6...

Waiting for device REMOVAL/INSERTION...

Waiting for fastboot device...

Looking for a device in fastboot mode
No devices detected in fastboot mode
25.10.2021 15:04:32 Process finished OK
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Old 10-25-2021, 21:26   #2 (permalink)
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for latest firmware, there is a workaround.
need a modelled cable with 10 kΩ resistor.
Please check Σ section, there is a big thread.
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Old 10-25-2021, 21:40   #3 (permalink)
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if you have a good cable as you mentioned, try this trick
when yo see Waiting for fastboot device unplug the PC side cable then quickly replug it
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Old 10-26-2021, 14:52   #4 (permalink)
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Quote:
Originally Posted by :Aishur: View Post
if you have a good cable as you mentioned, try this trick
when yo see Waiting for fastboot device unplug the PC side cable then quickly replug it
TNX! This method work goog!

Code:
Before operation turn phone to TestPoint mode:
Turn off phone, then short TestPoint on phone pcb
and plug USB cable
Wait for device "HUAWEI USB COM 1.0" in Ports


Repair
Unlock downgrade/customization limitations
FRP and Factory reset
Selected Cpu/Bootloader - Kirin980_P1_V3
2021-10-26 16:48:02.441 Connecting to server...
2021-10-26 16:48:02.602 Connected!
2021-10-26 16:48:03.332 HUAWEI device in Test Point mode Not found!
2021-10-26 16:48:03.480 Reading info...
2021-10-26 16:48:09.290 Done!

Fastboot provided info:
CPU: kirin980
Model: YAL-L21
Firmware: YAL-L61 11.0.0.172(C10E3R1P4)
Vendor: hw
Country: ru
SN: BQL0219Cxxxxxxxx
PCB SN: 026XGN19xxxxxxxx
WIFI MAC: EC3CBxxxxxx
Theme color: black
Device color: blue
FBLOCK: 1
Bootloader FB lock: unlocked
Bootloader User lock: locked

Found signed IMEI:
Key: 0x6000
IMEI1: 8632910xxxxxxxx
IMEI2: 8632910xxxxxxxx
SIM NW_LOCK status: UNLOCKED

Found OEM data:
Model: YAL-L61
Vendor: hw
Country: ru
Version limitation: OFF
Bootloader User lock: locked
Phone ID: 3770F9Bxxxxxx
2021-10-26 16:48:15.671 Repairing...
2021-10-26 16:48:15.706 Unlocking restrictions...
2021-10-26 16:48:15.819 Unlock restrictions success!
2021-10-26 16:48:15.827 Erase FRP...
2021-10-26 16:48:15.874 Erase FRP success!
2021-10-26 16:48:15.884 Done!
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