Support dropped due to security reasons:
- https://www.theregister.com/2024/08/07/riscv_business_thead_c910_vulnerable/
- https://ghostwriteattack.com/
1. Download u-boot files for Armbian
Download the u-boot file for the corresponding memory version of LicheePi 4A from the Action or Releases section of chainsx/thead-u-boot.
2. Flash u-boot to EMMC (required)
If there is a DIP switch, set it to EMMC mode. Press the BOOT button on the board and connect lpi4a to the computer using a data cable. Then perform the following operations:
sudo fastboot flash ram ./firmware/u-boot-with-spl.bin
sudo fastboot reboot
sleep 10
sudo fastboot flash uboot ./firmware/u-boot-with-spl.bin For installation of drivers, refer to the Sipeed official Wiki.
3. Flash the system
Option 1: Flash the system to an SD card
You can use Etcher or other software.
Option 2: Flash the system to EMMC
(1) Use the UMS (USB Mass Storage) feature of u-boot (experimental):
Interrupt the u-boot countdown by pressing `Ctrl^C` when counting down using the serial port to enter the u-boot command line, then enter the following command:
ums 0 mmc 0The EMMC will be mapped as a USB Mass Storage device on the computer, and you can use Etcher or other software to flash it.
(2) After booting from the SD card, use the dd command to copy the Armbian image to the EMMC.
4. Support status
It is recommended to use the legacy version based on T-Head SDK.
5. For 16GB version
First, you need to flash 16GB u-boot.
Second, you need to change “th1520-lichee-pi-4a.dts” to “th1520-lichee-pi-4a-16gb.dts” in /boot/extlinux/extlinux.conf.