41CL Self-Update

[Monte Dalrymple]

(10-10-2017 05:23 PM)Jurgen Keller Wrote:  

(10-09-2017 09:57 PM)aurelio Wrote:  who has already done a CL upgrade following Sylvain job?

I've updated my V2 41CL successfully. The other board (Beta) is currently not installed in a calculator, will do this later and try a 41CL to 41CL update.

V2-to-V2 update is only possible if you are somehow able to force the serial port
to turn on in one of the machines. In the past I have done this by transiently
connecting a battery between the Rx and GND pins on the serial connector, but
I do not recommend doing this. The RS232 driver only powers up when a valid
level is detected on the receive pin. V4/V5 has a connection between the CPU
and the driver that allows software to force the driver to turn on.

But the CL-to-CL update works fine. I do it all the time.