Hey did you ever find out which is the correct rom?I didn't see any information yet anywhere, but I emailed Hal9k (waiting for reply) - curious here if anyone knows if ModInstaller or some other ROM will work on my headunit - or tips to get me going?
RK3399 PX6 Android 8.1.0
MCU Ver: RL78_NCHHWY_F015PB
FrameworkVer: rk3399-userdebug 8.1.0 OPM5.171019.01 eng.zxw 20190622.103111 test-keys
I saw someone posted about having RL78 in another thread, but no luck.
Here's a link to item I had purchased and installed: https://www.dropbox.com/s/58hkowmch14gift/snapshot.pdf?dl=0