Flash official Sony firmware files to unbrick loops, downgrade software, or upgrade to a specific Android version.
Flashtool at this moment don’t support any variants of xperia XA1 ultra and plus … if you want to flash you xperia xa1 ultra or plus you need to patch the flashtool , but if don’t patch the flashtool you can’t flash variants plus and ultra. flashtool09110windowsexe patched
– usually in .ftf format. Many archives are shared on XDA or firmware aggregation sites. Flash official Sony firmware files to unbrick loops,