I want to do a SysUpgrade of my EspressoBin Board actually runninng 18.06.01 to the latest 18.06.02, but I have made an extroot overlay.
Do will I to plan a fresh new install from scratch, instead of a magic sysupgrade with luci ?
What about upgrade with sysupgrade or with luci when using an overlay for extroot ?
Is it supported actually or is it impossible in anyway ?
For my searches, the only howto from the official wiki is a link to -> https://wiki.mbirth.de/know-how/software/openwrt/sysupgrade-with-extroot.html
In my case, I made my OpenWrt 18.06.01 from the dump of the official ext4-sd for the MVEBU EspressoBin Board, and then I have added a second ext4 partiton on my SD Card wich was confgured as an extroot overlay.
It was the only way to get a full working, crash less resistant, OpenWRT.
I mainly inspired from https://openwrt.org/docs/guide-user/additional-software/extroot_configuration
Any precautions to take care and/or any advice will be verry welcome, because I have some few BOX already installed.