We have been running 121-3a.XI5.bin with much success on 2600s/NM-HDVs. However we need to look at upgrading this 1+ year old code to fix 'Yellow Alarms (RAI) resets the controller' (CSCds70637).
TAC suggested 12.1.5-XM4. However this bugfix (CSCds70637) forces us to 12.2, which TAC suggested 12.2(4)T1.
Previous TAC suggested upgrades (12.2(2)T) have left us pushing for Critical Account Status, and upset our phone users. Has anyone had success with 12.2(4)T1 in 2600/NMHDVs ?