Restore original u-boot on Pogoplug-E02 that has Doozan chained mtd3 u-boot

Hi folks

I have a Pogoplug-E02 here that I used to run Debian on from a USB HDD. At the time I followed Jeff's guide to install a chainloaded newer U-boot on mtd3.

The Pogoplug has been sitting unused for a while as the HDD died.

Now I want to install OpenWRT on following their guide (see "https://wiki.openwrt.org/toh/cloudengines/pogoplug";).

I have not yet decided whether to use their mtd0 u-boot or to chain-load - their guide covers both situations.

However before I start I wanted to return the Pogoplug back to its original U-boot (without the Doozan one first). I have a console cable and so I powered up the Pogoplug to have a look at its current state. Attached is what I saw - the initial Doozan U-Boot, its "printenv" output then, then the chainload original U-boot and its "printenv" output.

So how should I proceed? Just follow the notes in the "Old: Restore old uBoot on mtd0" section of this doc "http://projects.doozan.com/uboot/";? Do I just need to restore the original u-boot and nothing else? what about u-boot variable settings, I assume they will need fixed afterwards.

BTW I have obscured the real MAC address and cesvcid (pogoplug's unique id?) in the console output.

Thanks in advance for help



Edited 1 time(s). Last edit at 06/24/2016 07:17AM by armless.

armless,

You are running Jeff's u-boot image circa 2010, booting USB rootfs. You are not really chainloading anything normally. Except if you unplug the USB drive then it will chainload the stock u-boot to boot back to stock.

pogo_bootcmd=if fsload uboot-original-mtd0.kwb; then go 0x800200; fi

To restore stock u-boot, just flash the uboot-original-mtd0.kwb to mtd0. That's it. The original envs are in the 1st 1MB (mtd0). See this thread for simlimar instruction to flash it: http://forum.doozan.com/read.php?3,12381

-bodhi
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Thanks Bodhi

I restored the stock u-boot fine, now having problem with the 2nd stage OpenWRT u-boot - I'll post separately about that.