How to install on pogoplug e02 internal memory

I installed arch linux following instructions on archlinuxarm.org which flashed some custom u-boot, u-boot environment and then installed arch llinux on usb stick.
Now I want to install Lede on this device internal memory not on usb stick.
When I remove usb sticks device boots probably original factory pogoplug firmware.
This is what I have:

U-Boot information from netconsole:
U-Boot 2011.12 (Feb 20 2012 - 21:21:59)
Pogoplug E02
arm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2009q3-67) 4.4.1
GNU ld (Sourcery G++ Lite 2009q3-67) 2.19.51.20090709
Hit any key to stop autoboot: 0

After device finished booting with no usb sticks, I could login thru ssh and found this:

$ cat /proc/mtd
dev: size erasesize name
mtd0: 00100000 00020000 "u-boot"
mtd1: 00400000 00020000 "uImage"
mtd2: 02000000 00020000 "root"
mtd3: 05b00000 00020000 "data"

$ ls -la /usr/sbin
drwxr-xr-x 2 root root 0 Apr 12 2013 .
drwxr-xr-x 7 root root 0 Apr 9 2012 ..
-rwxr-xr-x 1 root root 14168 Apr 12 2013 blparam
lrwxrwxrwx 1 root root 17 Nov 4 2009 chpasswd -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 chroot -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 crond -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 dhcprelay -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 dnsd -> ../../bin/busybox
-rwxr-xr-x 1 root root 243132 Apr 9 2012 dropbear
lrwxrwxrwx 1 root root 17 Nov 4 2009 fakeidentd -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 fbset -> ../../bin/busybox
-rwxr-xr-x 1 root root 12819 Apr 12 2013 flash_erase
-rwxr-xr-x 1 root root 668497 Apr 12 2013 fw_printenv
lrwxrwxrwx 1 root root 21 Apr 12 2013 fw_setenv -> /usr/sbin/fw_printenv
lrwxrwxrwx 1 root root 17 Nov 4 2009 httpd -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 inetd -> ../../bin/busybox
-rwxr-xr-x 1 root root 21286 Apr 12 2013 nanddump
-rwxr-xr-x 1 root root 11500 Apr 12 2013 nandwrite
lrwxrwxrwx 1 root root 17 Nov 4 2009 rdate -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 readprofile -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 setlogcons -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 telnetd -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 4 2009 udhcpd -> ../../bin/busybox

$ /usr/sbin/fw_printenv bootcmd
bootcmd=usb start; run force_rescue_bootcmd; run ubifs_bootcmd; run usb_bootcmd; usb stop; run rescue_bootcmd; run pogo_bootcmd; reset

$ /usr/sbin/fw_printenv mtdparts
mtdparts=mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)

notice mtd2 is named differently than in /proc/mtd, is this error?

How to install Lede, which files to use and how?
I see 4 files to download on lede site. Openwrt has more files and wiki and forums have 4 or 5 install instructions, this makes things even more confusing and also their files are different. Should I flash u-boot file from openwrt, which one, both or only 1st one?

These are 4 files I found on Lede download page:
05-59508e3-kirkwood-pogo_e02-initramfs-uImage
05-59508e3-kirkwood-pogo_e02-squashfs-factory.bin
05-59508e3-kirkwood-pogo_e02-squashfs-sysupgrade.tar
05-59508e3-kirkwood-pogo_e02-uImage

first suggested is to upgrade your uboot from withing arch or debian
https://forum.doozan.com/read.php?3,12381

then follow this to install LEDE Reboot on flash
https://forum.doozan.com/read.php?4,42279,42279