HP 15c Collector's Edition save/restore does not work

[Johnh]

....further on this, in case this helps others:

Battery issues?

I got a new set of CR2032's, both measuring 3.34V

Calculator switches on fine

I load up some inputs and a small program, all is good. I switch off.

Now I remove one battery, being the one nearest the centre. On replacing it, all data has gone, like a full reset. The other battery has not maintained the charge.

I repeat with removal of the battery nearest the corner. Data is maintained, in fact I can switch on and run it on just the center battery.

Does this suggest anything?


VoyagerSave

Its going now, and below I attach a screen shot.

In win10, I open up a command prompt, which for me, says
C:\users\johnh> (johnh is my user name on this pc)

I chose to put the downloaded VoyagerSave.exe file in the root of my C drive. I guess I can put it anyplace I choose so long as I know where.

i connect the POGO cable, calc is off, i press and hold 'f' and 'enter', press and release 'on', release 'f' and 'enter', and I'm connected

There is no reference to 'Voyager' anywhere on my PC, the calc is there as a USB input device, in 'Device Manager' under 'Human Interface Devices', but without reference to what it is. No reference in Explorer etc. But it seems to work ok.

So my command to save the memory was
C:\Users\johnh>c:\VoyagerSave.exe -s hp12240828a
hp12240828a was my choice of a file name

This file was written, and was placed in my 'johnh' user directory

So I did that, with a program and some inputs in the calc . then cleared all data in the calc and checked it was empty

Then the same command, replacing -s with -r, read my data and program back in again, and it ran fine after switching calc off and back on as normal

So I can load up my routines again, and write more now.

A bit worried about the battery issue though!