Flashing instructions:
- Force device in maskrom mode – erase bootloader from Linux:
dd if=/dev/zero of=/dev/mmcblkX bs=1M count=8 conv=fsync
- General instruction for flashing with RKdevtools: https://docs.armbian.com/User-Guide_Getting-Started/#rockchip
- USB connection for RKdevtools: use lower port, near to SD card reader.
- Bootloader binary: https://fi.mirror.armbian.de/dl/mekotronics-r58hd/u-boot/rk3588_spl_loader_v1.08.111.bin
UART:
In case you are unable to enter maskrom mode, use UART and execute following command at boot loader prompt:
=> mmc dev 0 => mmc erase 0x0 0x2000
