Downgrad with using DCPhoenix_v118
Firmware used
https://mega.nz/#!hExizIoL!JYzWAuciV...vNZy6ozcfGbF68
unlocked by HCU
Direct SIM unlock
2020-05-14 13:29:52.941 Autodetect COM port and phone type start!
2020-05-14 13:29:55.751 Found COM port: COM79
2020-05-14 13:29:55.751 Found phone type: Huawei Android phone (HiSilicon CPU)
2020-05-14 13:29:55.941 Open COM port COM79 (Android Adapter PCUI (COM79))...
2020-05-14 13:29:58.421 Connecting to server...
2020-05-14 13:29:58.601 Connected!
2020-05-14 13:30:11.001 CP State: ready
2020-05-14 13:30:11.006 Read phone basic info...
2020-05-14 13:30:12.001 Read phone secure info...
2020-05-14 13:30:18.312 Phone info data backup saved to file D:\REPAIR CENTER\DC UNLOCKER\HCU_322\Backup\20200514_133018_865842031X XXXXX.BAK
2020-05-14 13:30:18.312 Unlocking start
2020-05-14 13:30:18.312 Phone secure identify start
2020-05-14 13:30:21.052 Phone secure identify fail!
2020-05-14 13:30:21.052 Writing public keys...
2020-05-14 13:30:21.631 Write public keys success!
2020-05-14 13:30:21.641 Phone secure identify start
2020-05-14 13:30:23.981 Phone secure identify success!
2020-05-14 13:30:27.701 Unlock done!