please call +44 (1344) 475125 to get a info if a servicepartner is available in Chittagong, Bangladesh.
Fujitsu Technology Solutions is also present in India so it could be getting a contact for fixing your problem.
It may be the partner charge you the time he work on.
The update of BIOS is in every case with own risk. Also written in the license conditions you have to except before downloading any kind of update.
Sorry but we hope you get fix the problem with our India colleagues.
THE POSSIBILITIES ARE INFINITE