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Old 07-02-2020, 15:10   #1 (permalink)
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LYA-L29 Not booting, and wont flash,need help

Hello, i have Mate 20 PRO,when try to power it says :
"Your device has failed verification and may not work properly" and not booting to OS. I can go to recovery and fastboot , phone goes to Upgrade mode as well, but have problem with flashing.

Here is phone info :
Vendor/Country: demo/eu
System version: Skipped
Android version: 9
Base version: LYA-LGRP2-OVS
Custom version: LYA-L29-CUST
Preload version: LYA-L29-PRELOAD
Huawei-Over-the-Air info:
	C_version: C652
	D_version: D000
	PLMN: 25503
	BoardID: 8426
	DeviceName: LYA-L29
it has demo/eu region and i try to flash C652 firmware: LYA-L29 Laya-L29C Firmware 9.0.0 r3 EMUI9.0.0 05015KLX but it gives me error.

SigmaKey 2.36.00 HiSi: Enable downgrade
DBAdapter Reserved Interface (COM680), Provider: HUAWEI Technologies CO.,LTD, Driver ver.:, Date: 18.05.2016, USB\Vid_12D1&Subclass_13&Prot_23
Enabling firmware downgrade...D:\Downloads\mate20\LYA-L29C_9.0.0_C652.skf
Hardware IMEI: 020304050607080
Flash file D:\Downloads\mate20\c652\Software\dload\update_sd_base\PTABLE.APP
Writing flash SHA256RSA OK
Writing flash CRC OK
Writing flash BASE_VERLIST ...Version mismatch.
Use "Enable downgrade" action  first, then retry flashing.
Why it gives me an error? maybe it because my firmware :
Phone has inside - Build number: LYA-L29
Firmware has (C652E13R1P16)
I need another firmware, where can i get it? or i can change region to hw\eu somehow, and it will help to flash C432?

Also try downgrade file LYA-L29C_9.0.0_C652.skf it gives same error.

I need buy power pack to revive this phone?
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