newRPL - build 1255 released! [updated to 1299]

[osg]

hello,

I am having trouble to upgrade FW on the calculator.

Errror: USB connection cannot be established. Windows recognizes the calculator (notification sound after connecting the calculator), but the HP Conn3x doesn't see the calculator.

Device: hp39gs and hp40gs, firmware version 1016.

Behavior: calculator is not recognized by conn3x application (windows 7 and windows 10). While I put calculator to flash mode (reset & + -, then update), "R" button shortly appears and calculator gets connected. In 2-3 seconds it disconnects.

Note: I did not have issue to flash 1001 and 1016 firmware on the same PC with the same OS.

Anyone else having this issue?
Can you advice how can I flash new version or revert to stock firmware?

Thanks for help.

Jan