How to flash GDFS using phone xs ?

[cobra4000]

Hello,I have recently flashed my w810i using phone XS.The problem is when I insert a SIM that connects to GSM 800,it works fine.But operators that are running GSM 1800 mhz,arent working any more.Unfortunately only 1 operator in our country uses GSM 800 and its undoubtedly the worst one .I have confirmed that i have to flash the GDFS to resolve the issue.Can anyone give me step by step instructions on how to do this using phone xs.inclduing which format of GSFS I need to use .HElp....:(

Try reFLASHING with "Generic Main" and "Generic FS".

:( Maan u messed up. For future advice, dont flash ur phone with wrong firmware, like I did :D


U can also try this link
http://www.topsony.com/foro/local_links.php?catid=431

However i recomment flashingur phone with XS++ and use "generic" FS and MAIN.