Interesting and strange at the same time:
From the stock U-Boot 1.1.2 on one of my Pogoplug V3 B04 devices, I just can't erase nand. Instead I get an immediate device reset, when trying to do so.
Next try will be from within Linux, following navym's instruction. Hope it will boot from a working new u-boot then. Fingers crossed.
BTW, all the Pogo V3 devices seem to have that behaviour, when it comes to NAND and stock U-Boot.
Anyone noticed before?
Edit:
BIG THANKS! New U-Boot is running fine, as it seems. Now moving on to more tests on the kernel, tomorrow, probably.
Erasing and flashing the NAND worked like a charm from within Linux.
Edit 2:Unfortunately, for example the USB functionality of navym's U-Boot version seems very buggy. Issueing a "usb start" command leads to a following device hang. Some other functions seem to have the same effect.
Edit 3: Forget my previous comment!The USB problems were merely caused by me using a (seemingly unstable) external 5V power supply to power my test Pogoplug V3 B04. After switching back to the default power supply, the USB functionality is working like it should. Sorry!