I downloaded these 4 files
linux-firmware-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
linux-headers-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
linux-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
u-boot-rock64-0.6.44_all.deb
Installed as following steps
1. sudo dpkg-reconfigure locales
--solved locale not set warning
2.sudo dpkg-reconfigure tzdata
--set the correct time zone
3. sudo dpkg -i /myDownloadPath/u-boot-rock64-0.6.44_all.deb
-- there is error, saying dependency "debsums" is missing.
-- then I use "sudo apt install debsums", some further error on dependency, but follow the instructions on the screen, it is easy to fix
4. sudo dpkg -i /myDownloadPath/linux-headers-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
5. sudo dpkg -i /myDownloadPath/linux-firmware-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
6. sudo dpkg -i /myDownloadPath/linux-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
-- warning: root device not found
-- that scares me, I thought it will be dead again
7. sudo reboot
-- keep my fingers crossed. it came back. it is still alive!!!
8. sudo apt update
9. sudo apt upgrade
-- I saw the kernel related image files did not show up in the upgrade list. that is good sign!!!
10. sudo reboot
-- it looks good
11. sudo apt autoremove
-- remove all obsoleted packages reported.
12. sudo apt upgrade
-- showing everything is up to date, all set!!!
I still do not understand the warning -- "root device not found". it might be just a wrong or fake message
linux-firmware-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
linux-headers-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
linux-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
u-boot-rock64-0.6.44_all.deb
Installed as following steps
1. sudo dpkg-reconfigure locales
--solved locale not set warning
2.sudo dpkg-reconfigure tzdata
--set the correct time zone
3. sudo dpkg -i /myDownloadPath/u-boot-rock64-0.6.44_all.deb
-- there is error, saying dependency "debsums" is missing.
-- then I use "sudo apt install debsums", some further error on dependency, but follow the instructions on the screen, it is easy to fix
4. sudo dpkg -i /myDownloadPath/linux-headers-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
5. sudo dpkg -i /myDownloadPath/linux-firmware-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
6. sudo dpkg -i /myDownloadPath/linux-image-4.4.126-rockchip-ayufan-239_0.6.44_arm64.deb
-- warning: root device not found
-- that scares me, I thought it will be dead again
7. sudo reboot
-- keep my fingers crossed. it came back. it is still alive!!!
8. sudo apt update
9. sudo apt upgrade
-- I saw the kernel related image files did not show up in the upgrade list. that is good sign!!!
10. sudo reboot
-- it looks good
11. sudo apt autoremove
-- remove all obsoleted packages reported.
12. sudo apt upgrade
-- showing everything is up to date, all set!!!
I still do not understand the warning -- "root device not found". it might be just a wrong or fake message