I could upgrade ubuntu firmware via software. It was able to get in upgrade mode by quick pressing F button 3 times.
But there is impossible to go in upgrade mode from SD card like instruction.
I need to upgrade ubuntu 18.04 kernal 5.3 for ROS application. But, there is no 5.3 version for Emmc
It is SD/usb only
Do you have solution?
You can use Krescue to flash the EMMC with the latest version or mainline ubuntu or previous versions if present on the online repository,
as eMMC images can only be packed with legacy kernel and uboot till now, only the latest image of mainline kernel versions of linux (for amlogic) allow you to pack eMMC,
If you been able to boot the mainline linux from the SD card, run the command
sudo emmc-install and the firmware will be installed onto the eMMC.
Stay safe && happy holidays
thanks for your answer @Electr1
. That what i got after run sudo emmc-install
. What should i do next to upgrade Ubuntu. There is version 18.4 kernel 5.3 in SD card
Where is Ubuntu installed ?
If it is already in the eMMC the procedure is complete, you can remove the SD card and it will boot up from eMMC.
if you are going to update the system its a very tedious process, instead of doing so, just flash latest version of Mainline Ubuntu available from Krescue, and update the system.
Here is guide for Krescue usage:
And how to update system: