Pocket Router (E5577Cs-321 )firmware Writing error

[4gcity]

I want to unlock my E5577s Router.When i trying to make firmware Showing Error. I already tried this firmware's (21.180.99.03.00_general_SIGNED.dgtks,21.200.05.00...

[dilshandd]

i have a option icon 225 modem(branded by orange)
while i was updating firmware 2.5.13Hd (lights were blinking fast on modem)
and then the...