[Mate 8 Q&A, Help & Troubleshooting] sozofriend1234:
I just used DC Unlocker Phoenix to recover using the 320 stock update.app. It completed the process successfully on the tool but then also after the reboot, the screen remains black and do not boot up.

Any help?? :(

Current version: NextL09C185B100EMUI41

Extracting partitions

Cannot create extract directory: C:\Users\Ravinder\Desktop\DC_Phoenix_v22\tmp\20161108_173125_UPDATE\

Extract files to directory: C:\Users\Ravinder\Desktop\DC_Phoenix_v22\

Extracting partition: XLOADER OK

Extracting partition: FW_LPM3 OK

Extracting partition: FASTBOOT OK

Extracting partition: MODEMNVM_UPDATE OK

Extracting partition: TEEOS OK

Extracting partition: TRUSTFIRMWARE OK

Extracting partition: SENSORHUB OK

Extracting partition: FW_HIFI OK

Extracting partition: BOOT OK

Extracting partition: RECOVERY OK

Extracting partition: RECOVERY2 OK

Extracting partition: DTS OK

Extracting partition: MODEM OK

Extracting partition: MODEM_DSP OK

Extracting partition: 3RDMODEM OK

Extracting partition: SYSTEM OK

Extracting partition: CUST OK

Extracting partition: MODEM_DTB OK

Device found: 23Q7N16226004380

IMEI: 868407023861691

Build number: :KangVIP Slim

Product model: HUAWEI NXT-L29

Writing XLOADER partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\XLOADER.img

XLOADER partition UPDATE ...FAILED

Cannot get FBlock info from device

Activating backdoor: DONE

Writing XLOADER partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\XLOADER.img

XLOADER partition UPDATE ...OK

Writing FW_LPM3 partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\FW_LPM3.img

FW_LPM3 partition UPDATE ...OK

Writing FASTBOOT partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\FASTBOOT.img

FASTBOOT partition UPDATE ...OK

Writing MODEMNVM_UPDATE partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\MODEMNVM_UPDATE.img

MODEMNVM_UPDATE partition UPDATE ...OK

Writing TEEOS partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\TEEOS.img

TEEOS partition UPDATE ...OK

Writing TRUSTFIRMWARE partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\TRUSTFIRMWARE.img

TRUSTFIRMWARE partition UPDATE ...OK

Writing SENSORHUB partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\SENSORHUB.img

SENSORHUB partition UPDATE ...OK

Writing FW_HIFI partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\FW_HIFI.img

FW_HIFI partition UPDATE ...OK

Writing BOOT partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\BOOT.img

BOOT partition UPDATE ...OK

Writing RECOVERY partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\RECOVERY.img

RECOVERY partition UPDATE ...OK

Writing RECOVERY2 partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\RECOVERY2.img

RECOVERY2 partition UPDATE ...OK

Writing DTS partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\DTS.img

DTS partition UPDATE ...OK

Writing MODEM partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\MODEM.img

MODEM partition UPDATE ...OK

Writing MODEM_DSP partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\MODEM_DSP.img

MODEM_DSP partition UPDATE ...OK

Writing 3RDMODEM partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\3RDMODEM.img

3RDMODEM partition UPDATE ...OK

Writing SYSTEM partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\SYSTEM.img

SYSTEM partition UPDATE ...OK

Erasing CUST partition

Partition CUST erased

Writing CUST partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\CUST.img

CUST partition UPDATE ...OK

Writing MODEM_DTB partition with file C:\Users\Ravinder\Desktop\DC_Phoenix_v22\MODEM_DTB.img

MODEM_DTB partition UPDATE ...OK

Software written

08-Nov-16 5:38:29 PM Writing device finished OK

Still getting the black screen on reboot.