Vadirocks bro. Thanks for your reply. I donwloaded version 22 from your link in another thread. I extracted the folder in pendrive. Pressed reset button for 15-20 sec. STB restarted and pop up box came to select pen drive as recording device or cancel. Paired the remote and After cancelingthis popup box. Home screen appears. No installation.
I'm from Bangladesh. It's bit difficult to contact customer support from here. Do they reply if I contact with different email than registered email?