Default [Q] Bird V12/V1277|Chinese Phone rom flashing question

Hello everyone, I have a question about flashing Bird V1277 or V12. Unfortunatelly I'm very confused about flashing a rom on this unknown chinese phone, but I would really like to flash it because I have gyroscope sensor problems (They're not responding or working), I tried callibration sequence, no work. As well I have problems while watching mp4 or any kind of video on MV Player or BS Player.. H/W Decoding doesn't work, only gives sounds, S/W has too many lag spikes and sounds stop for a few seconds. Multitouch bug.. Did anyone experience a bug with volume max/min buttons on the right? I pressed that and nothing came up.. but after squeezing my phone at volume change thing.. it works, I don't know if that's software bug or hardware.. If anyone has advice or similar, I will be happy to get my phone into working order. Thank you!
And of course.. Is it safe to flash it?

Phone: Android Phone Bird V12/V1277

P.S. Sorry for the double topic, but the other section was filled with other topics so I thought someone who can help won't see my topic.. Once again, I apologize.