Ubiquiti Edgerouter X: Unable to create initramfs-factory.tar

[mustangtyson]

I have the git branch for openwrt-18.06 and it compiles. But it does not compile into the target i need. I am installing on a Ubiquiti Edgerouter X. According to this guide:
https://openwrt.org/toh/ubiquiti/ubiquiti_edgerouter_x_er-x_ka

I need the openwrt-ramips-mt7621-ubnt-erx-initramfs-factory.tar target generated. But i am unable to generate it. I keep getting targets like this:
openwrt-ramips-mt7621-device-ubnt-erx.manifest
openwrt-ramips-mt7621-device-ubnt-erx-rootfs.tar.gz
openwrt-ramips-mt7621-ubnt-erx-initramfs-kernel.bin
openwrt-ramips-mt7621-ubnt-erx-squashfs-sysupgrade.tar

How do i make a "initramfs-factory.tar" file?

Under "make menuconfig" i select:
Target System (MediaTek Ralink MIPS) --->
Subtarget (MT7621 based boards) --->
Target Profile (Ubiquiti EdgeRouter X) --->

Under "Target Images" i unselect "squashfs" and leave "ramdisk" selected with lzma.

What am i doing wrong?

[tmomas]

Seems the devicepage is a bit outdated; I have updated it now.

Not exactly your device, but close enough:

Install EdgeRouter X firmware to EdgeRouter X SFP

Simply use initramfs.bin image Sysupgrade can also be used from initramfs image to flash OpenWrt.

Mentioning of the kernel.bin instead of tar (already back in 2017, an still today the bin is being built, not the tar):

Ubiquiti EdgeRouter X: *-factory.bin image missing?

You can use LEDE modifications made by obsy from eko.one.pl He's maintaining OpenWRT and LEDE images for a number of different devices and keeps them up-to-date. He also provides superb support for anyone who needs help with setting up OpenWRT/LEDE on their devices. Check out he's website: http://eko.one.pl/ He's forum: http://eko.one.pl/forum/ (most of the post there will be in polish but people has been writing in english before so don't get discouraged). He's repositories: http://dl.eko.o…

See also

Install OpenWrt 18.06.2 on ubiquiti edgerouter x

It isn't necessary to build yourself. I used the pre-built initramfs image on the download server. https://downloads.openwrt.org/releases/18.06.2/targets/ramips/mt7621/openwrt-18.06.2-ramips-mt7621-ubnt-erx-initramfs-kernel.bin

[mustangtyson]

ubnt@ubnt:/tmp$ add system image openwrt-18.06.2-ramips-mt7621-ubnt-erx-initramfs-kernel.bin
Version [v1.9.7+hotfix.3.5013617.170830.0227] is about to be replaced
Are you sure you want to replace old version? (Yes/No) [Yes]: yes
Checking upgrade image...Upgrade image does not support the device. Upgrade failed.
/tmp
ubnt@ubnt:/tmp$

Hum. Do i need to downgrade edgeos before i install this? I have EdgeRouter ER-X/ER-X-SFP/EP-R6: Firmware v2.0.4 installed?

[OSUserx]

Thank you for your update. But it didn't work for me either or maybe I got something wrong.

EdgeOS was v1.10.7

What worked for me was flashing the "openwrt-ramips-mt7621-ubnt-erx-initramfs-factory.tar" from this german wiki:
https://wiki.opennet-initiative.de/wiki/Ubiquiti_EdgeRouter
After that I could flash the sysupgrade file from the official OpenWRT wiki.

OpenWRT 18.06.2 @ ER-X

[lucize]

the kernel is too large, if you look at the output (V=s) you will see, try to disable kernel stuff and maybe you will get the needed image or use old branch with older kernel just for the initial image