BPI-R4: burn image to onboard Nand problem

Banana Pi Router design BPI-R4/BPI-R4 Pro(MT7988)
1

I used instruction Getting Started with BPI-R4 - Banana Pi Wiki to burn image to onboard Nand but got

~# mtd erase /dev/mtd0
Unlocking /dev/mtd0 ...
Erasing /dev/mtd0 ...

Skipping bad block at 0x2680000
Skipping bad block at 0x28a0000
Skipping bad block at 0x28c0000
Skipping bad block at 0x28e0000
Skipping bad block at 0x2900000
Skipping bad block at 0x2920000
Skipping bad block at 0x2940000
Skipping bad block at 0x2960000

And sometimes it just hangs. I don’t think it is good, isn’t it?

After that, dd show errors too and of course it doesn’t boot from Nand

Any ideas or I have bad chip?

2

Looks like it was fixed https://www.youtube.com/watch?v=kZwrXHPhkOg But I did not try it yet.

3

Afaik i had it on bpi image only. Can you try mainline openwrt (24.10-rc)? Boot from sdcard and install nand from uboot menu

1 Like
4

Yes, it works. Looks like it skipped these damaged blocks during the install. This is the article Banana Pi BPI-R4: OpenWrt Quickstart – Interfacing Linux

5

It’s possible that the NAND chip is faulty, but as long as there aren’t many bad blocks, it shouldn’t affect its use.