mobile

Dear Vietnamese owner,

I really need your help here guys my Phone was bought in Vietnam and I got a really big peoblem in this phone.

first is, I can't switch from GSM MODE TO WCDMA because it is not touchable.and I figure out that the IMEI of the phone that can be viewed in the settings is different from the IMEI at the back of the battery.
srcond is, When I'm gonna flash or boot through Download Mode it redirect me to Factory Test mode..abd the Language is Vietnamese..
when I hold volume up plus power plus home button it goes to a some kind of choices either go to recovery,reboot normal,or hot boot..but when i pressed any keys it wont responce..

so pkease guys I really need your help I want to fix my phone I hope you can help me to understand your methods in installing recovery or flashing stock rom via Odin

best regards..