HP50g ROM Upgrade / Downgrade Question

[MattGreer]

I'm currently on ROM 2.09 and believe I may see some benefit from upgrading to 2.15. I'm aware of the IFTE bug (although perhaps there's a workaround) but I rarely, if ever, plot anything on the calculator. So it's not a big concern.

That being said, is it easy/simple to flash back and forth from one ROM to another? Anything I should be aware of? Obviously backing up the HOME menu and Libraries is a must. Anything else?

Thank you for your help!