@David-TP Just PM you. TQ.

@David-TP The current firmware came installled on the modem I bought, so I dont know where it originated from. And yes, the error msg popped up when I tried to install any of the v2 firmwares from...

Trying to upgrade to firmware but keep getting error 4503. New firmware version Current details: Firmware Version: 1.0.0 3.0.0 v60e0.0 Build 250411 Rel.56555n Hardware Version: Archer NX200 v2.0...