OK,
started from here, with TP-Link's EU 1.20 v1.1.0 installed.
Flashed openwrt-23.05.3-ramips-mt7621-tplink_archer-ax23-v1-squashfs-factory.img:
root@OpenWrt:/# ubus call system board
{
"kernel": "5.15.150",
"hostname": "OpenWrt",
"system": "MediaTek MT7621 ver:1 eco:3",
"model": "TP-Link Archer AX23 v1",
"board_name": "tplink,archer-ax23-v1",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "23.05.3",
"revision": "r23809-234f1a2efa",
"target": "ramips/mt7621",
"description": "OpenWrt 23.05.3 r23809-234f1a2efa"
}
}
root@OpenWrt:/tmp# dd of=/tmp/a if=/dev/mtd6 skip=198673 count=11 bs=1
11+0 records in
11+0 records out
root@OpenWrt:/tmp# cat /tmp/a
3.0.3
ildroot@OpenWrt:/tmp# vi /tmp/a
3.0.3
^@^@ild
~
~
root@OpenWrt:/tmp# opkg update
....
root@OpenWrt:/tmp# opkg install kmod-mtd-rw
....
root@OpenWrt:/tmp# insmod mtd-rw.ko i_want_a_brick=1
[ 526.669415] mtd-rw: mtd0: setting writeable flag
[ 526.674217] mtd-rw: mtd5: setting writeable flag
[ 526.678816] mtd-rw: mtd6: setting writeable flag
[ 526.683451] mtd-rw: mtd7: setting writeable flag
root@OpenWrt:/tmp#
root@OpenWrt:/tmp# echo "1.1.0 Build" > /tmp/vers.ion
root@OpenWrt:/tmp# dd if=/tmp/vers.ion of=/dev/mtd6 seek=198673 count=11 bs=1 conv=notrunc
11+0 records in
11+0 records out
root@OpenWrt:/tmp#
root@OpenWrt:/tmp# rm a
root@OpenWrt:/tmp# dd of=/tmp/a if=/dev/mtd6 skip=198673 count=11 bs=1
11+0 records in
11+0 records out
root@OpenWrt:/tmp# cat a
1.0.0ildroot@OpenWrt:/tmp#
I see there's still something fishy with my dd when replacing the version.
Used https://argsnd.github.io/tp-link-stock-firmware-converter/index.html to convert the AX23_eu_jp_kr_ru-up-ver1-1-0-P1[20230725-rel56344]_2023-07-25_15.41.43.bin to a sysupgrade image, and flashed it with keep parameters unchecked, and force checked.
Aaaaand, voila!
flashed the TP-Link upgrade file once again, to get the version right.
