Are there any chance to restore original firmware to NAND?
For the moment I do have working system on emmc and heve issues with OS on NAND.
# cat /proc/mtd
dev: size erasesize name
mtd0: 00200000 00020000 "bl2"
mtd1: 07e00000 00020000 "ubi"
# cat /proc/partitions
major minor #blocks name
31 0 2048 mtdblock0
31 1 129024 mtdblock1
179 0 7634944 mmcblk0
179 1 512 mmcblk0p1
179 2 2048 mmcblk0p2
179 3 4096 mmcblk0p3
179 4 32768 mmcblk0p4
179 5 307200 mmcblk0p5
259 0 4079 mmcblk0p128
179 8 4096 mmcblk0boot0
179 16 4096 mmcblk0boot1
259 1 8444 fit0
259 2 291252 fitrw
254 0 44764 ubiblock0_1
Official manual is telling us that we can use single image to restore NANS content
mtd erase /dev/mtd0
dd if=mtk-bpi-r3mini-NAND-20230719-single-image.bin of=/dev/mtdblock0
but the problem is that /dev/mtdblock0 is RO.
Only using USB2TTL nand cam be resorted?
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frank-w
(Frank W.)
2
Why not install up2date openwrt on nand?
What is that? Im not a big expert in OpenWrt and have a huge gap in knowledge … I just need somehow to have working OS that can start from Nand.
frank-w
(Frank W.)
4
I thought emmc uboot has nand install commands,but it does not seems to
But you can try to do like it is defined in nand environment
https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=package/boot/uboot-mediatek/patches/442-add-bpi-r3-mini.patch;h=5409f7fa0de71ed406727c1d53cc5a1e733afdeb;hb=HEAD#l456
I’m no expert in openwrt too…but if there is a newer system i do not want to install an older one 
Were able to reinstall to NAND.
Here is what I did to do that
#
insmod mtd-rw.ko i_want_a_brick=1
#
mtd erase bl2 && mtd write openwrt-mediatek-filogic-bananapi_bpi-r3-mini-snand-preloader.bin bl2
#
umount /mnt/ubi0* 2> /dev/null
ubidetach -p /dev/mtd1 2> /dev/null
mtd erase ubi
#
ubiformat -y /dev/mtd1
ubiattach -p /dev/mtd1
#
ubimkvol /dev/ubi0 -n 0 -N ubootenv -s 128KiB
ubimkvol /dev/ubi0 -n 1 -N ubootenv2 -s 128KiB
# Install uboot
volsize=$(wc -c < openwrt-mediatek-filogic-bananapi_bpi-r3-mini-snand-bl31-uboot.fip)
ubimkvol /dev/ubi0 -N fip -n 2 -s $volsize -t static && \
ubiupdatevol /dev/ubi0_2 openwrt-mediatek-filogic-bananapi_bpi-r3-mini-snand-bl31-uboot.fip
# Install en8811h-fw
cat /lib/firmware/airoha/EthMD32.dm.bin /lib/firmware/airoha/EthMD32.DSP.bin > ./en8811h-fw.bin
volsize=$(wc -c < openwrt-mediatek-filogic-bananapi_bpi-r3-mini-snand-bl31-uboot.fip)
ubimkvol /dev/ubi0 -N en8811h-fw -n 3 -s $volsize -t static && \
ubiupdatevol /dev/ubi0_3 /tmp/en8811h-fw.bin
# Install recovery
volsize=$(wc -c < openwrt-mediatek-filogic-bananapi_bpi-r3-mini-initramfs-recovery.itb)
ubimkvol /dev/ubi0 -n 4 -N recovery -s $volsize && \
ubiupdatevol /dev/ubi0_4 openwrt-mediatek-filogic-bananapi_bpi-r3-mini-initramfs-recovery.itb
# Install system
volsize=$(wc -c < openwrt-mediatek-filogic-bananapi_bpi-r3-mini-squashfs-sysupgrade.itb)
ubimkvol /dev/ubi0 -n 5 -N fit -s $volsize && \
ubiupdatevol /dev/ubi0_5 openwrt-mediatek-filogic-bananapi_bpi-r3-mini-squashfs-sysupgrade.itb
# Create rootfs_data partition
ubimkvol /dev/ubi0 -n 6 -N rootfs_data -m
Vitalii
(Vitalii)
6
Have you used UART-USB in your solution to this problem?
Nope. I did this from emmc OS as it was alive
dmrbdlln
(Damir Abdullin)
8
Guys, where do you get initramfs ? I downloaded files from OpenWRT’s selector page, but there is no initramfs image to download.
frank-w
(Frank W.)
9
Have you tried compiling yourself? i guess it is created but not uploaded to firmware-selector.
dmrbdlln
(Damir Abdullin)
10
You mean have I tried to build it using firmware-selector? Yes, but there was no initramfs 
frank-w
(Frank W.)
11
I mean building openwrt from source,not the firmware-selector…it seems not getting the file you want from build-pipeline
1 Like