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

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Old 09-03-2019, 08:56   #16 (permalink)
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How to safely downgrade P30 Pro? What we need to pay attention when selecting firmware?
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Old 09-03-2019, 16:14   #17 (permalink)
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if it runs android 9 then you can downgrade only to android 9 lower version.
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Old 11-04-2019, 17:27   #18 (permalink)
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Failed to flash Mate 9 MHA-L29

DC Phoenix 0.0.0.117
user:039C22261C

Looking for a device in force upgrade mode
Device detected:
COM48: HUAWEI USB COM 1.0 (COM48)
04/11/2019 10:25:46 PM Starting to write device in FASTBOOT mode...
File to update: C:\Users\Arslan IT Center\Desktop\Huawei Mate 9 HLMHAAL00AM00A074 Board Software Android 7.0.0 Nougat EMUI 5.0 05021YVS File By (Suppor.**************)\HLMHAAL00AM00A069_Board Software_China_Nonspecific_Android 7.0_EMUI 5.0_05021YVS_A_2._inc_testpoint.dgtks
Device detected:
COM48: HUAWEI USB COM 1.0 (COM48)

Process identifier:20121494


Writing bootloader...
Step 1...

USB Device REMOVAL
Type: @oem213.inf,%qcomdevice00%;HUAWEI USB COM 1.0
VidPid: VID_12D1&PID_3609
Instance id: 5&22a600f3&0&9


USB Device INSERTION
Type: @oem213.inf,%qcomdevice00%;HUAWEI USB COM 1.0
VidPid: VID_12D1&PID_3609
Instance id: 5&22a600f3&0&9


Error writing Bootloader
04/11/2019 10:26:00 PM Writing device finished - INCOMPLETE
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Old 11-05-2019, 09:30   #19 (permalink)
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Doesn't seem that loader fits, should try another one from the list on oeminfo tab.
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