Can not update firmware with the latest connectivity kit

[Jean-Baptiste Boric]

So I've dusted off my HP Prime and did the following operations:

• update from official firmware version 10077 to official firmware version 10637 with the new method ;
• update from official firmware version 10637 to Rip'Em dcf427 with recovery ;
• update from Rip'Em dcf427 to official firmware version 10637 with recovery.
  

All three firmwares worked perfectly with no issues, so I don't think you've bricked your calculator but merely have flashing issues with the official recovery mode.

Do the following operations:

• remove the battery ;
• close the HP Prime Connectivity Kit ;
• put back the original firmware in the relevant directory (download it from ftp://ftp.hp.com/pub/calculators/Prime/ if needed) ;
• hold down the SYMB button ;
• plug in your HP Prime to your computer with a USB cable ;
• open the HP Prime Connectivity Kit.
  

At this point the HP Prime Connectivity Kit should prompt you to update the firmware.

I am still not sure why Rip'Em did not work on your calculator. Perhaps you've made a mistake while building/flashing my firmware? (after all, Rip'Em is still a hacked-together proof of concept not suitable for daily use).