We have 2 older PNAs that I'd like to upgrade the firmware in order to get access to :MMEM:TRAN? (and a few others). One is an E8363B at revision A.07.50.60 and the other is an E8364B at A.07.50.48. Going through the recommended firmware versions I see that these two types don't support version A.09.xx.xx (both should be either latest production A.07.50.48 or latest customer A.07.50.67). However, it does state "...you could use revision 8.xx or 9.xx firmware (up to 9.42.xx)..."
I was thinking of using version A.09.42.22 (which I know supports MMEM:TRAN and HCOP:SUM:DATA and MMEM:STOR:DATA to add the .prn and .csv files which v7 doesn't support).
A) Is this safe?
C) If it fails, can I easily go back to, say A.70.50.67?
D) If all above is okay, is release A.09.33.09 or A.09.42.22 a better choice?
I understand that possibly some of the GUI features of A.09.xx.xx may not be available but the manual users will only need what they currently have and I realize that some of my SCPI commands will need to be updated for existing SW.