(At your own risk... We aren't responsible for bricked devices)
Base is from modified Mi Fit by @MagicalUnicorn
For force custom language Set Polish for Mi Band 4
(Profile-> MB4 -> Settings->Force language->Polish)
Change OTA server for updates MB4 to my server with custom resources
(Profile-> MB4 -> Settings->Online update)
★ "Unlock Screen" function Force Close (FC).
★ Google Account connection doesn't work.
OTA update "Open Hours"
You can test here if server online send text "Server is ONLINE"
Server should be online -
MO-TH 17:00 - 20:00 UTC
All test and work on MB4 without NFC
Updates FW and RES for MB4 is download by language your phone. If not supported default is English UTF-8.
If not found update, you close Mi Fit and again run.
I will add others custom res soon.