41CL Self-Update

[Sylvain Cote]

(10-29-2017 04:50 PM)aurelio Wrote:  is up to your experience a new fresh alkaline pack sufficient for upgrading a couple of CL (procedure time 3h about each one) or it's better to plug a new fresh pack each time?

I only use rechargeable 1.2V 500MAH NIMH N CELL x 4 kits on my 41CL machines
I have done more than 50 upgrade and downgrade in the past 18 months with these batteries without any issue.
I have done several update on the same set of battery with the same charge, also without issue.
I intentionally started an update when the batteries were weak to validate how the update ROM was handling the BAT indicator.
As soon as the BAT indicator lighted up, the ROM shut down the calculator and did update the ALPHA register correctly.
After putting back charged batteries, I was able to continue the update right were it stopped.