I have flashed a few UEFIs, and the process was again going smooth on my berknip (Ryzen) Chromebook. I got the completed successfully message, and rebooted. While I did wait approximately 10 minutes, the screen never came up.
I’ve tried with and without battery or power, hard reset / refresh key, using HDMI out, watching for USB key activity, but no screen backlight and no keyboard backlight. The only sign of activity is, with the back off of it, the fan pulses on for a second and off for 5 seconds.
Does anyone have any experience with this scenario? I’m about to order the SuzyQ, but I’d love to know it isn’t in vain. Thank you in advance.
I have been having the exact same issue trying to flash my Berknip HP chromebook. I finally buckled and bought a SuzyQ to flash the stock firmware back. I gave it another shot after a successful recovery with the SuzyQ only to have the same issue again.
Thank you for the reply. I also received my SuzyQ this week. Though I originally got the all clear from the firmware script, I followed the unbrick instructions to reinstall the UEFI firmware. While flashing, I thought it was odd that the “erase/write” phase only lasted for a few seconds. Since its a differential flash and because it lasted for such a short time, it is basically confirmed that the original script did not fail.
tldr: unbricking with the coreboot uefi did not solve the problem, still unresponsive as in OP.
After the failed unbrick, I restored the original rom saved during the script process, and all became well. I was back to stock.
I was then able to successfully flash the RW Legacy and begin to work on dual boot. I did eventually get this working, but since my model only had the emmc storage, I had to follow directions from another post here to create /boot and /boot/efi/ partitions on a USB stick.
What follows is what I believe are accurate roadblocks and findings from my experience with berknip (rev.5) 14b-na0010nr with emmc only.
UEFI flashed successful, but will not power on and shows no sign of life other then charging / power indicator
UEFI can be unbricked by SuzyQ, but only back to original stock fw
RW_Legacy fw will also flash, but built-in keyboard and emmc storage are not visible in BIOS
chrultrabook / crap does not work with emmc only
Use USB stick and partitioning instructions from here to install OS for dual boot. !!! Note: I did not format the entire emmc, just resized the big partition in Ubuntu livecd.
Bonus: Ubuntu 24.04 installs well, with audio working, and keyboard script working.