It probably just describes the procedure of flashing a uImage to the backup/secondary kernel area of NAND, at the 0xB00000 address. And also the command to explictly boot that secondary/backup uImage, instead of the primary/main uImage.
That should be all. I don't know chinese, but the commands look very familiar.
Like here (section "Flashing and testing a new kernel"):
https://github.com/ingmar-k/Pogoplug_V3_Emdebian/blob/master/README.md
Debian wheezy can be booted with a modified kernel 2.6.31.14, too.
https://github.com/ingmar-k/2.6.31.14_OXNAS_kernel
Some more testing is needed, but the "older" kernel has the big advantage of MUCH higher data transfer speeds for SATA and USB. ;-)
That should be all. I don't know chinese, but the commands look very familiar.
Like here (section "Flashing and testing a new kernel"):
https://github.com/ingmar-k/Pogoplug_V3_Emdebian/blob/master/README.md
Debian wheezy can be booted with a modified kernel 2.6.31.14, too.
https://github.com/ingmar-k/2.6.31.14_OXNAS_kernel
Some more testing is needed, but the "older" kernel has the big advantage of MUCH higher data transfer speeds for SATA and USB. ;-)