NSA 2600 entered Safe Mode while upgrading OS to v. 184.108.40.206-101n
On an NSA 2600 firewall I had an issue while upgrading SonicOS from v. 220.127.116.11-97n to v. 18.104.22.168-101n.
I uploaded new firmware sw_nsa-2600__eng_22.214.171.124-101n.sig via GUI and initiated "Boot uploaded firmware - with current configuration" but the firewall didn't booted successfully even after 30 minutes. I had to go to the server room and I found the TEST light blinking slowly on the appliance (0.5 seconds on, 0.5 seconds off) which indicates it is running in Safe Mode.
Then I hard reset the appliance with power off/on and it booted successfully with the new firmware.
I upgraded SonicOS on that appliance many times and it never entered Safe Mode after upgrade.
So, has anyone else encountered such issue while upgrading to v. 126.96.36.199-101n?
Not specific to that FW version but I've run into this a few times on Gen6 devices. It's been a few years since the last time I ran into it. I've made it procedure to reboot any firewalls prior to doing a firmware update, it seems to have cleared up any booting into safe mode during a FW upgrade.