Very simple Solution.........
I solve this problem many time....
follow steps
1. Search " Twister Activator & Req 2 Fbi.exe "
[You must be registered and logged in to see this link.]on
[You must be registered and logged in to see this link.]2. And download " Req.fbi " form SARAS Support Site < sarunasoftware >....
3. update Firmware again with downloaded " Req.fbi "...
4. Run " Twister Activator & Req 2 Fbi.exe "
5. Press Conver button and open " ******.Req " file from \program files\saras\update client ....
6. Update Firmware again with " ur box serial # " converted file *.fbi
Run Dct, sams, etc
enjoyy!!!!!!!!!!