Firmware Upgrade Path & License for NSA 2600
I'm a jr SysAdmin, and I have to upgrade two NSA 2600 with support expired.
Are there published upgrade paths for the NSA firewalls?
First of all: can I update the firmware with Software and Firmware Updates expired in Nov 2019 ?
Second: should I follow an update path from firmware 18.104.22.168 to the latest 22.214.171.124-97n or can you jump directly to the latest 126.96.36.199 -> 188.8.131.52-97n ? Are Safemode Version and ROM Version related to firmware update?
I looked for this information in the Support Matrix, but I wasn't able to find anything regarding firmware upgrade, just configuration import/exports.
Third: Is the latest installable firmware version related to Software and Firmware Updates license date expiration?
Thank you for the support!