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Sylvain Cote · (This post was last modified: 07-20-2022 11:43 AM by Sylvain Cote.)

Hello Uli,
I would suggest that you look at the examples (p.43 to p51) of the 41CL Update Functions Manual.
Example #2 (p.44) show how to shorten the outdated ROMs scan time from minutes/hours to seconds/minutes. (CPONLY before FLCHK?)
Example #3 (p.45) show how to update the OS sector. (OSUPDT & OSPROT)
However the actual Flash update will takes minutes/hours to do.
As suggested by Meindert, it is a good idea to deactivate the sleep mode on your computer and on your 41CL (ON).
Sylvain

Edit: FLCHK? only scan for outdated ROMs, it is FLUPD who do the actual update.

Code:

FLCHK? → Check Flash Memory Against Flash Database

FLUPD  → Update Flash Memory

The update process is clearly explained in the 41CL Update Functions Manual.