In Search of 15C+ ROM image

[Benoit Maag]

Thank you J-F for the memory patch and DMH for a great video showing the install.
It worked great!

Is there a patch to the 04-15-11 firmware to make PSE work (rather than go back to the 08-19-09 firmware which Bob indicated has its own bugs)?

[linq2008]

(07-02-2022 02:16 PM)Katie Wasserman Wrote:  Here's are the most recent 12C binaries that I have:

12C SAM4 version from 2015

12C+ from 2011

After I flash the file “12C+ from 2011”，（My HP 12C
+ is Version 2012，FW: 2012-04-03，ChE：E1E1h）， the screen show some garbled code. After reset, it showed “-Pr Error”, and the CHS button was invalid and the switch was disabled. Still display - on the front （Now FW: 2011-12-12，ChE：4903h）， That's why？ Has anyone tested it? It seems this file is wrong。
   
   
   
   
   

[dvcirilo]

Check this post: https://www.hpmuseum.org/forum/thread-20367.html