Hi all, this is my first post here.

I've got my hands on a used MICS with Rel 1 T1 software which I'd like to upgrade to 4.1. If I don't care to retain the current config, can I just plug in the NVRAM cartridge with software card, or do I need the upgrade tool?

I have an option to get my hands on a used 4.1 XC with nvram cartridge. The 'XC' part simply means I can expand to 10 modules as opposed to 6? Or are there any restrictions/hardware requirements when using XC software?

Any help greatly appreciated!