Default [Q] Hi, All need help with sky vega racer 2 Im-A830ke!!!

To Be very clear i need Help with sky vega racer 2 IM-A830"ke"

Hi, everyone need some help fixing its stock 4.1.2 sms 80 byte limit problem....
I've rooted it....but couldn't flash recovery in it permanently it goes back to 3e after restart....

I've read All Pantech mobile help thread and its mostly about IM-A830S/L/K not alot about ke model and its very old so there must be new and simple methods available now...

and yes i know about the hanzoo rom, but is it the only method coz i really like this stock and i've removed kor apps too

I've already bricked one Sky Mobile before and i'm afraid of doing it again so please help me in baby steps...and safe methods please .........

Thanks in advance...........