[Mate 8 Q&A, Help & Troubleshooting] sozofriend1234:
Hi All,

Need help.

I was flashing 320 on L29C185 and things went wrong. I was on Kangvip and dirty flashed it.

Now the phone not booting and in fastboot it shows remote command not allowed. It shows BL and FRP locked.

Now I have the BL code but how to unlock the FRP as I am unable to boot into the ROM even after installing the update from stock recovery. The installation of update completes and after reboot, shows the huawei logo on the first screen and then just goes blank.

Any help would be appreciated.

Solved: Step by step guide below:

1. Download DC-Unlocker Phoenix software from there website.

2. Boot your phone in Fastboot mode using Vol - key and Power key pressed together and USB cable plugged to computer and phone.

3. Launch Phoenix and click OK on the first warning.

4. Enter your DC-Unlocker account ID and Password which you get when you purchase credits from the website.

5. If you want to read the tutorial about the Phoenix usage, select Yes otherwise continue pressing No.

6. Make sure that You seect Fastboot mode and App file in the options on the home screen and select the Update.App that you want to flash using the three dots.

7. Phoenix will extract the update.app in the folder and will list the files for you in the tool.

8. Click Select All and click update.

9. On the left hand side you will see the progress of flash.

10. Once it says firmware flashed OK, remove your phone from USB and reboot.

11. After booting, do a DLOAD flash by placing the update.app in the DLOAD folder in the root of SDCARD and pressing Vol +-and power key at the same time.

This should fix your phone unless you messed up real bad like I did and below is what I did to recover it.

USING THIS METHOD REMOVES IMEI AND OTHER NO. FROM YOUR PHONE SO YOU WILL HAVE TO RESTORE THEM USING HCU CLIENT WHICH AGAIN NEEDS 8 CREDITS FROM DC-UNLOCKER.

1. After the above steps, my phone was still not working. So I from the phoenix software click on the Enter Support Area.

2. Download the Factory image for your device (unfortunately only AL10 is available for Mate 8, no L29).

3. In Phoenix, select IMG file instead of the App files.

4. Select the factory image downloaded from the support area by selecting the three button menu.

5. Connect your phone in fastboot mode.

6. Select update and wait for the process to complete.

7. After process ins complete, remove your phone and reboot.

8. After reboot, you can DLOAD you relevant firmware using SD Card dload method.

9. Once the process is complete, you will have to restore your IMEI using HCU Client which will again use DC-Unlocker credits.

10. Launch HCU and put in your ID and password and connect. It will show how many credits you have in your account. You should atleast have 8.

11. Go to project menu of your phone by dialling *#*#2846579#*#* and selecting ProjectMenu -> 2.USB ports setting -> Select Manufacture mode

12. Connect phone to laptop and select read phone info.

13. Go to the tab Repair UMTS and select the IMEI and Sub IMEI and enter your 1st and 2nd IMEI in them respectively.

14. If you want to change the MAC of bluetooth and Wifi, you can do that otherwise leas=ve it as it is.

15. Click on repair and it will rewrite your IMEI nos. and reboot and factory reset the phone.

Doing these steps should give you your phone in 100% working conditions. Atleast I got my Mate back by following the exact same steps.