41CL backup CDB via serial?

[cdmackay]

hi all,

I may have to do some hardware work on my 41CL, which is obviously going to entail loss of RAM.

Is it possible to save my correlated CDB image via serial, to avoid the 3-hour CRC checking of pages by FLCHK? at my next update? i.e. with all valid bits intact so that I can still use CPONLY?

I noticed that I have a CFLDB.ROM file in the directory when I ran clupdate; is that in fact an already backed-up copy of my CDB from FLCHK? If so, how would I restore it after a RAM loss? Or does that not preserve the per-page valid bit?

thanks very much indeed.