By folowing this
SMALL TUTORIAL FOR VENDOR / COUNTRY CHANGE [DEMO REMOVE] ON HUAWEI P20 / P20 Pro
i did all steps but phone not going to update mode
Fly Captain Huawei Resurrector 0.0.0.34
user:0000000
Device detected:
COM4: HUAWEI USB COM 1.0 (COM4)
BOOTLOADER File to update: Kirin970_T2_A8.1_V5
OEM File to update: EML-L29
8/22/2019 9:44:58 AM Starting to write device...
Process identifier:4619518
Writing bootloader...
Writing Kirin970_T2_A8.1_V5_3.dtwork...
Writing Kirin970_T2_A8.1_V5_4.dtwork...
Writing Kirin970_T2_A8.1_V5_5.dtwork...
Waiting for fastboot device...
Device found: 0123456789ABCDEF
Looking for a device in fastboot mode
Device found: 0123456789ABCDEF
Getting IMEI...
Getting build number...
Getting model ...
Getting battery state...
Getting backdoor info...
Getting lock state info...
Getting lock boot info...
Build number: :EML-L29 8.1.0.107D(EUC652)
Model: EML-L29
Battery state: 0
OEM lock state info:
FB LockState: UNLOCKED
USER LockState: LOCKED
OEM get bootinfo:
unlocked
Writing OEMINFO partition
OEMINFO partition UPDATE ...OK
Software written
8/22/2019 9:46:10 AM Writing device finished OK