update : the charging and file transfer issue is fixed.
i was searching for ways to downgrade the firmware after posting this, because i read some articles that it fixes etc.. but didn't found any ways to do that.. but i found that we can actually update the firmware again with the same version of the firmware file. so i downloaded the firmware again and this time i didn't use the fuji camera remote app, i used card as always and updated it again and the issues were fixed, i haven't tested the battery life, but i am hopeful that it's fixed too since other issues are fixed by doing this. so anyone who got issues after version 2 firmware update, please update again using card and see if that fix the issues. if not then add your issues under this thread. also never use fujifilm camera remote app to update firmware, it's the first time i used app to update and i got enough issues by doing it. have a great day everyone.
