Title: Upgrade Exception of RK3566/RK3568 [Print This Page] Author: zyk Time: 7/26/2021 15:27 Title: Upgrade Exception of RK3566/RK3568 Last edited by zyk In 7/28/2021 17:10 Editor
If the board RK3566/RK3568 have both Nor Flash and EMMC storage media, and we upgrading firmware miss some steps, it may cause some exceptions such as system failed to start normally
The following summarizes some exceptions and handling methods for reference:
Download Firmware Fail
R: Without switching storage media to EMMC, the firmware is directly upgraded. At this time, the firmware is burned into Nor Flash. The capacity of Nor Flash cannot load a complete firmware with a size of 1GB +, so it will fail. In case of upgrading failure, it is recommended to click EraseFlash to erase to prevent entering Nor Flash after restart
If EMMC has burned into a firmware, the system will boot from EMMC to normal mode after short circuit Nor Flash. Each time we want to boot from EMMC to normal mode, we must short Nor Flash, it's cumbersome and inconformity. So we need to go back maskrom mode to erase Nor Flash, there are two ways for us to enter maskrom:
¢ŁShort circuit Nor Flash and EMMC at the same time
¢ŚWhen shorting circuit of Nor Flash, press ctrl+c to enter uboot command line mode during EMMC startup. and then enter command rbrom to go back maskrom mode
"Bootdev(atags): mmc 0" means system boot from EMMC
Trapped in "Starting kernel"
Starting kernel ...
=>
Copy the code
R: It may be caused by improper configuration of the serial port debug module or software used. The system may have been up. At this time, we can connect the screen like HDMI to see whether there is a display or whether ADB can be used normally