It's a simple phone, but to avoid a time spending with it, here is the easy way:
Select in Settings tab for CPU SP SC77xx [Model Select]
Load PAC file for model in Flash TAB:
You can get it from my
old post, if you haven't in collection.
Go to Service TAB, Press Format FS / Reset Phone / Clear FRP and connect phone with both Volume + and - pressed. Wait Until process finish and till phone full power On.
That's all.
WBR, DebeliaMark, BG