Uninstall OpenWRT on SRC50AXE

Installing and Using OpenWrt
1

I bought a used SCR50AXE.

I want to use Nebula for this, since my access points also use Nebula.

However, the previous owner installed OpenWrt, and I'm now looking for a way to reset the router. I hope someone can help me.

Thanks, Daniel

2

The git commit that added support for the this device has some instructions. Looks like you need a backup of the original firmware's rootfs. Taking a backup of it is one step listed in flashing OpenWrt on it.

qualcommax: ipq50xx: Add support for Zyxel SCR50AXE - openwrt - OpenWrt Source Repository

3

Unfortunately, I purchased the device used.
And the seller did not inform me of this beforehand.
Consequently, I was unable to create a backup.

Perhaps it would be possible to adapt a backup from an identical model?
That is, provided someone is able to make one available.

4

If you already own a SCR50AXE, you can create one yourself by booting an Openwrt initramfs.

5 
root@OpenWrt:~# strings /dev/mtd16 | grep -i zyxel | head -20
ARM64 OpenWrt zyxel_scr50axe device tree blob

,Zyxel SCR50AXE
2zyxel,scr50axe
Zyxel-SCR50AXE
Zyxel-SCR50AXE-5G
Zyxel-SCR50AXE-6G
OpenWrt zyxel_scr50axe
/usr/bin/zyxel-bootconfig
Hzyxel-nbg6817.json
zyxel-bootconfig.list
zyxel-bootconfig
root@OpenWrt:~#
root@OpenWrt:~# hexdump -C /dev/mtd16 2>/dev/null | head -8
00000000  55 42 49 23 01 00 00 00  00 00 00 00 00 00 00 01  |UBI#............|
00000010  00 00 08 00 00 00 10 00  69 f9 1e 15 00 00 00 00  |........i.......|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 a6 bb 94 24  |...............$|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000800  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
root@OpenWrt:~#

i cant find any Nebula remains

6

I didn't mean the one you just bought, if you had one since earlier.

7

Unfortunately, my first and only one.