Unlocking the bootloader is the mandatory first step for any custom software.
The Quest for a Better XA1: Which Custom ROM Actually Saves This Phone? sony xperia xa1 custom rom better
Stock Sony software on the XA1 is bloated. Background processes like Xperia Home launcher, What’s New , and AVG Protection often consume RAM unnecessarily. Unlocking the bootloader is the mandatory first step
is a classic example of a "diamond in the rough" device that can be significantly improved with a custom ROM. Originally released with Android 7.0 and officially updated only to Android 8.0, the the : Before you start
: Before you start, check your device's "Booting status" by dialing *#*#7378423#*#* to ensure the bootloader is unlockable.