ok, here is the A850
L sms fix and hotspot fix for version 2.22

i've tested it myself and it works, infact, i'm doing lowyat surfing through my phone's celcom 3g. If anyone know vietnamese, please help me to drop a thank you message to the person who posted the fix.
http://www.tinhte.vn/dienthoai/threads/nha...ega-r3.1830063/General requirements :
1) make sure your phone is rooted. root file for A850L 2.22
http://www.fshare.vn/file/TCH95SZ15T/ password: voky45
2) download the sms-fix and hotspot-fix files
http://www.fshare.vn/file/TW2CZFBT4T password: nathai
Steps for sms fix (as in my previous post #709) :
1) using Root Explorer or equivalent, make a backup copy of the files "framework.jar" & "framework.odex" found in /system/framework (just incase the fix file doesn't work for you)
2) copy the "framework.jar" & " framework.odex" found in the downloaded zip file to your phone and overwrite the
original files in /system/framework
3) reboot the phone
4) use external sms program to send sms !
Steps for hotspot fix :
1) using Root Explorer or equivalent, make a backup copy of the files "init.qcom.post_boot.sh" found in
/system/etc (just incase the fix file doesn't work for you)
2) copy the "init.qcom.post_boot.sh" found in the downloaded zip file to your phone and overwrite the
original files in /system/etc
3) reboot the phone, and you're done!
once again, i don't claim the credit to these fixes. All thanks to the person on the vietnam forum.

His method for applying fixes is "Flash via CWM or TWRP offline " according to google translate.
i must done something wrong, now stuck at U+ LTE loading screen...