Netgear D7800 sysupgrade: image is incompatible for sysupgrade

[hnyman]

You might try setting in manually to 2.0

uci set system.@system[0].compat_version=2.0
uci commit system

(or edit by hand)

Discussion about similar situation as yours can be found e.g. in discussion here (a few messages before and lots after...)

Mvebu: target upgrade borked

That is probably the drawback that anomeome has stumbled on, as the string is stored on common uci, not permanently in the image itself (like e.g. /etc/opkg/distfeeds.conf is defined) I just tested it, and yep, that is buggy. Without the uci setting, the sysupgrade from the new image silently fails and the router quickly reboots.

[cluelessdev]

Ok, I get sysupgrade does not work, but does that imply also image-builder made factory images with manually added packages do not work either?
That' what I'm experiencing.
Sorry maybe dumb question.

[hnyman]

Read my previous answers. Try setting the value manually to 2.0, and you should be able to sysupgrade normally.

You partition scheme (size 06080000 of ubi) matches the "new" size set by commit a0ad07ea,

@cluelessdev

mtd5: 00400000 00020000 "kernel"
mtd6: 06080000 00020000 "ubi"
mtd7: 00700000 00020000 "reserve"

reg = <0x1880000 0x6080000>;

EDIT:
your /etc/config/system should have

root@OpenWrt:~# cat /etc/config/system

config system
	option hostname 'OpenWrt'
	option timezone 'UTC'
	option ttylogin '0'
	option log_size '64'
	option urandom_seed '0'
	option compat_version '2.0'

[cluelessdev]

@hnyman

uci set system.@system[0].compat_version=2.0
uci commit system

Writing to 'openwrt-22.03.3-642180a6a1e7-ipq806x-generic-netgear_d7800-squashfs-sysupgrade.bin'
image verification succeeded
invoking sysupgrade
Connection to 192.168.1.1 closed by remote host.
Connection to 192.168.1.1 closed.

Ohh YES that worked.
Thanks @hnyman