hello, i got bsnl dna - a211 - i router.i try to update firmware with "thu-0q-005_test_2-20080928" b'se in router wifi was not working properly. now after install firmware my router is completely stop working.dsl led is not on.only power led and inet led working. so plz help me to how to install original firmware in my router. im waiting for reply. thank you chirag