[Huawei P9 Plus Questions & Answers] Rocksau:
I tried to unlock. No success.

Using DC-Phoenix I get this:

Current version: VIE_Global_5.0_oversea_channel

Extracting partitions

Cannot create extract directory: F:\Programme\DC_Phoenix\tmp\20170418_175324_UPDATE\

Extract files to directory: F:\Programme\DC_Phoenix\

Extracting partition: MODEMNVM_UPDATE OK

Extracting partition: SENSORHUB OK

Extracting partition: FW_HIFI OK

Extracting partition: BOOT OK

Extracting partition: MODEM OK

Extracting partition: MODEM_DSP OK

Extracting partition: 3RDMODEM OK

Extracting partition: SYSTEM OK

Extracting partition: MODEM_DTB OK

Extracting partition: XLOADER OK

Extracting partition: FASTBOOT OK

Extracting partition: DTS OK

Extracting partition: FW_LPM3 OK

Extracting partition: TEEOS OK

Extracting partition: TRUSTFIRMWARE OK

Extracting partition: RECOVERY OK

Extracting partition: RECOVERY2 OK

Device found: N9Q7N16513XXXXXXXX

IMEI: 8608650XXXXXXXX

Build number: :VIE-L09C432B360

Product model: VIE-L09

Writing MODEMNVM_UPDATE partition with file F:\Programme\DC_Phoenix\MODEMNVM_UPDATE.img

MODEMNVM_UPDATE partition UPDATE ...FAILED

Cannot get FBlock info from device

Activating backdoor: DONE

Writing MODEMNVM_UPDATE partition with file F:\Programme\DC_Phoenix\MODEMNVM_UPDATE.img

MODEMNVM_UPDATE partition UPDATE ...OK

Writing SENSORHUB partition with file F:\Programme\DC_Phoenix\SENSORHUB.img

SENSORHUB partition UPDATE ...OK

Writing FW_HIFI partition with file F:\Programme\DC_Phoenix\FW_HIFI.img

FW_HIFI partition UPDATE ...OK

Writing BOOT partition with file F:\Programme\DC_Phoenix\BOOT.img

BOOT partition UPDATE ...OK

Writing MODEM partition with file F:\Programme\DC_Phoenix\MODEM.img

MODEM partition UPDATE ...OK

Writing MODEM_DSP partition with file F:\Programme\DC_Phoenix\MODEM_DSP.img

MODEM_DSP partition UPDATE ...OK

Writing 3RDMODEM partition with file F:\Programme\DC_Phoenix\3RDMODEM.img

3RDMODEM partition UPDATE ...OK

Writing SYSTEM partition with file F:\Programme\DC_Phoenix\SYSTEM.img

SYSTEM partition UPDATE ...OK

Writing MODEM_DTB partition with file F:\Programme\DC_Phoenix\MODEM_DTB.img

MODEM_DTB partition UPDATE ...OK

Writing XLOADER partition with file F:\Programme\DC_Phoenix\XLOADER.img

XLOADER partition UPDATE ...OK

Writing FASTBOOT partition with file F:\Programme\DC_Phoenix\FASTBOOT.img

FASTBOOT partition UPDATE ...OK

Writing DTS partition with file F:\Programme\DC_Phoenix\DTS.img

DTS partition UPDATE ...OK

Writing FW_LPM3 partition with file F:\Programme\DC_Phoenix\FW_LPM3.img

FW_LPM3 partition UPDATE ...OK

Writing TEEOS partition with file F:\Programme\DC_Phoenix\TEEOS.img

TEEOS partition UPDATE ...OK

Writing TRUSTFIRMWARE partition with file F:\Programme\DC_Phoenix\TRUSTFIRMWARE.img

TRUSTFIRMWARE partition UPDATE ...OK

Writing RECOVERY partition with file F:\Programme\DC_Phoenix\RECOVERY.img

RECOVERY partition UPDATE ...OK

Writing RECOVERY2 partition with file F:\Programme\DC_Phoenix\RECOVERY2.img

RECOVERY2 partition UPDATE ...OK

Software written

18.04.2017 17:55:34 Writing device finished OK

Second attempt:

Current version: VIE_C900B000

Extracting partitions

Cannot create extract directory: F:\Programme\DC_Phoenix\tmp\20170418_180047_UPDATE\

Extract files to directory: F:\Programme\DC_Phoenix\

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: 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

Extracting partition: RECOVERY OK

Device found: N9Q7N16513XXXXXXX

IMEI: 860865030XXXXXXX

Build number: :VIE-L09C432B360

Product model: VIE-L09

Writing XLOADER partition with file F:\Programme\DC_Phoenix\XLOADER.img

XLOADER partition UPDATE ...FAILED

Cannot get FBlock info from device

Activating backdoor: DONE

Writing XLOADER partition with file F:\Programme\DC_Phoenix\XLOADER.img

XLOADER partition UPDATE ...OK

Writing FW_LPM3 partition with file F:\Programme\DC_Phoenix\FW_LPM3.img

FW_LPM3 partition UPDATE ...OK

Writing FASTBOOT partition with file F:\Programme\DC_Phoenix\FASTBOOT.img

FASTBOOT partition UPDATE ...OK

Writing MODEMNVM_UPDATE partition with file F:\Programme\DC_Phoenix\MODEMNVM_UPDATE.img

MODEMNVM_UPDATE partition UPDATE ...OK

Writing TEEOS partition with file F:\Programme\DC_Phoenix\TEEOS.img

TEEOS partition UPDATE ...OK

Writing TRUSTFIRMWARE partition with file F:\Programme\DC_Phoenix\TRUSTFIRMWARE.img

TRUSTFIRMWARE partition UPDATE ...OK

Writing SENSORHUB partition with file F:\Programme\DC_Phoenix\SENSORHUB.img

SENSORHUB partition UPDATE ...OK

Writing FW_HIFI partition with file F:\Programme\DC_Phoenix\FW_HIFI.img

FW_HIFI partition UPDATE ...OK

Writing BOOT partition with file F:\Programme\DC_Phoenix\BOOT.img

BOOT partition UPDATE ...OK

Writing RECOVERY2 partition with file F:\Programme\DC_Phoenix\RECOVERY2.img

RECOVERY2 partition UPDATE ...OK

Writing DTS partition with file F:\Programme\DC_Phoenix\DTS.img

DTS partition UPDATE ...OK

Writing MODEM partition with file F:\Programme\DC_Phoenix\MODEM.img

MODEM partition UPDATE ...OK

Writing MODEM_DSP partition with file F:\Programme\DC_Phoenix\MODEM_DSP.img

MODEM_DSP partition UPDATE ...OK

Writing 3RDMODEM partition with file F:\Programme\DC_Phoenix\3RDMODEM.img

3RDMODEM partition UPDATE ...OK

Writing SYSTEM partition with file F:\Programme\DC_Phoenix\SYSTEM.img

SYSTEM partition UPDATE ...FAILED

Erasing CUST partition

Partition CUST erased

Writing CUST partition with file F:\Programme\DC_Phoenix\CUST.img

CUST partition UPDATE ...FAILED

Writing MODEM_DTB partition with file F:\Programme\DC_Phoenix\MODEM_DTB.img

MODEM_DTB partition UPDATE ...OK

Writing RECOVERY partition with file F:\Programme\DC_Phoenix\RECOVERY.img

RECOVERY partition UPDATE ...OK

Software written

18.04.2017 18:02:33 Writing device finished - INCOMPLETE

Third attempt:

Current version: VIE_Global_5.0_oversea_channel

Extracting partitions

Cannot create extract directory: F:\Programme\DC_Phoenix\tmp\20170418_180519_UPDATE\

Extract files to directory: F:\Programme\DC_Phoenix\

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: MODEM_DTB OK

Device found: N9Q7N165130XXXXXX

IMEI: 8608650302XXXXXXXX

Build number: :VIE-L09C432B360

Product model: VIE-L09

Writing XLOADER partition with file F:\Programme\DC_Phoenix\XLOADER.img

XLOADER partition UPDATE ...FAILED

Cannot get FBlock info from device

Activating backdoor: DONE

Writing XLOADER partition with file F:\Programme\DC_Phoenix\XLOADER.img

XLOADER partition UPDATE ...OK

Writing FW_LPM3 partition with file F:\Programme\DC_Phoenix\FW_LPM3.img

FW_LPM3 partition UPDATE ...OK

Writing FASTBOOT partition with file F:\Programme\DC_Phoenix\FASTBOOT.img

FASTBOOT partition UPDATE ...OK

Writing MODEMNVM_UPDATE partition with file F:\Programme\DC_Phoenix\MODEMNVM_UPDATE.img

MODEMNVM_UPDATE partition UPDATE ...OK

Writing TEEOS partition with file F:\Programme\DC_Phoenix\TEEOS.img

TEEOS partition UPDATE ...OK

Writing TRUSTFIRMWARE partition with file F:\Programme\DC_Phoenix\TRUSTFIRMWARE.img

TRUSTFIRMWARE partition UPDATE ...OK

Writing SENSORHUB partition with file F:\Programme\DC_Phoenix\SENSORHUB.img

SENSORHUB partition UPDATE ...OK

Writing FW_HIFI partition with file F:\Programme\DC_Phoenix\FW_HIFI.img

FW_HIFI partition UPDATE ...OK

Writing BOOT partition with file F:\Programme\DC_Phoenix\BOOT.img

BOOT partition UPDATE ...OK

Writing RECOVERY partition with file F:\Programme\DC_Phoenix\RECOVERY.img

RECOVERY partition UPDATE ...OK

Writing RECOVERY2 partition with file F:\Programme\DC_Phoenix\RECOVERY2.img

RECOVERY2 partition UPDATE ...OK

Writing DTS partition with file F:\Programme\DC_Phoenix\DTS.img

DTS partition UPDATE ...OK

Writing MODEM partition with file F:\Programme\DC_Phoenix\MODEM.img

MODEM partition UPDATE ...OK

Writing MODEM_DSP partition with file F:\Programme\DC_Phoenix\MODEM_DSP.img

MODEM_DSP partition UPDATE ...OK

Writing 3RDMODEM partition with file F:\Programme\DC_Phoenix\3RDMODEM.img

3RDMODEM partition UPDATE ...OK

Writing SYSTEM partition with file F:\Programme\DC_Phoenix\SYSTEM.img

SYSTEM partition UPDATE ...OK

Writing MODEM_DTB partition with file F:\Programme\DC_Phoenix\MODEM_DTB.img

MODEM_DTB partition UPDATE ...OK

Software written

18.04.2017 18:07:29 Writing device finished OK

Fourth attempt:

Current version: VIE_Global_5.0_oversea_channel

Extracting partitions

Cannot create extract directory: F:\Programme\DC_Phoenix\tmp\20170418_181719_UPDATE\

Extract files to directory: F:\Programme\DC_Phoenix\

Extracting partition: CUST OK

Extracting partition: VERSION OK

Device found: N9Q7N165130XXXXXX

IMEI: 8608650302XXXXXXXX

Build number: :VIE-L09C432B360

Product model: VIE-L09

Erasing CUST partition

ERASE partition CUST ...FAILED

Writing CUST partition with file F:\Programme\DC_Phoenix\CUST.img

CUST partition UPDATE ...FAILED

Cannot get FBlock info from device

Activating backdoor: DONE

Erasing CUST partition

Partition CUST erased

Writing CUST partition with file F:\Programme\DC_Phoenix\CUST.img

CUST partition UPDATE ...OK

Writing VERSION partition with file F:\Programme\DC_Phoenix\VERSION.img

VERSION partition UPDATE ...OK

Software written

18.04.2017 18:17:39 Writing device finished OK

But still the device won't boot.