Strange, it looks like that you have an OpenWrt indeed, but it is missing some fundamental pre-init scripts and that the jffs2 partition is not there.
If possible, try to reinstall the Attitutde Adjustment Beta 2 squashfs-factory (not jffs2 or sysupgrade) from (recommended) :
http://downloads.openwrt.org/attitude_a … actory.bin
Alternatively, you can try the less stable trunk snapshot:
http://downloads.openwrt.org/snapshots/ … actory.bin
The way to proceed is to get one of these files on your host PC and make it available to the MR3020 either by setting up an HTTP or FTP server on your PC, telnet to the MR3020 as you did, then:
# cd /tmp
# wget http://192.168.1.2/openwrt-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin
# sysupgrade -n openwrt-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin
or
# cd /tmp
# wget ftp://192.168.1.2/openwrt-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin
# sysupgrade -n openwrt-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin
Where "192.168.1.2" is your PC own IP static address. You can use the tab key to complete the long name
If everything is ok, the MR3020 should reboot automatically, and provide a telnet at 192.168.1.1, where you can change the root password and reboot to get access to the router using SSH as usual.
If you used the recommended AA beta 2 image, you should then have the LuCI admin web interface at http://192.168.1.1, where you can set up networking as you like.
Hope it helps!
EDIT: you should be able to use a single "sysupgrade" command without prior downloading the file with "wget", but this way, you are sure that you file is transfered onto the router!
(Last edited by Squonk on 4 Nov 2012, 15:48)