Adtran 904 2nd Gen cannot upgrade beyond T900G2A-A4-09-00-E.biz

[Anonymous]

Old Adtran 904 2ndGen had T900G2A-A4-08-00-E.biz firmware, which I was able to upgrade to T900G2A-A4-09-00-E.biz.  I am not able to upgrade to anything higher that is available, so I tried using T900G2A-R10-9-5-E.biz, which failed (see below).  How can I get this unit upgraded?  Eventually want to upgrade to the latest, R13.5.2

Verifying images. Please wait...

Unknown header version, ignoring...

Bad file signature.

'T900G2A-R10-9-5-E.biz' is not a valid image.

Primary image error.  Primary boot configuration not updated!!!

Reverting to primary image "T900G2A-A4-09-00-E.biz"

Primary image: T900G2A-A4-09-00-E.biz

Backup image:  T900G2A-A4-09-00-E.biz

The boot ROM that is on this unit is the same as on other 9XX units that we have and they have newer firmware on them.

Hardware version A

Boot ROM version 14.04.00

[jayh · Accepted solution]

The file you're trying to load has a bad checksum or hash value. It's also really old. Download T900G2A-R13-5-2-E.biz and try that.