Bricked R3 Mini

Banana Pi Router design BPI-R3/R3 Mini(MT7986)
1

Hi All.

I am compiled OpenWRT (GoldenOrb) image. I installed by switching to Nand and installing images to emmc using these instructions:

  1. Write bootloader and OpenWrt images Move files to the device /tmp using scp:
    • openwrt-*-bananapi_bpi-r3-mini-emmc-preloader.bin
    • openwrt-*-bananapi_bpi-r3-mini-emmc-bl31-uboot.fip
    • openwrt-*-bananapi_bpi-r3-mini-initramfs-recovery.itb
    • openwrt--bananapi_bpi-r3-mini-squashfs-sysupgrade.itb Write them to the appropriate partitions: echo 0 > /sys/block/mmcblk0boot0/force_ro dd if=/tmp/openwrt--bananapi_bpi-r3-mini-emmc-preloader.bin of=/dev/mmcblk0boot0 dd if=/tmp/openwrt--bananapi_bpi-r3-mini-emmc-bl31-uboot.fip of=/dev/mmcblk0p3 dd if=/tmp/openwrt--bananapi_bpi-r3-mini-initramfs-recovery.itb of=/dev/mmcblk0p4 dd if=/tmp/openwrt-*-bananapi_bpi-r3-mini-squashfs-sysupgrade.itb of=/dev/mmcblk0p5 sync

Everything worked fine for about 30 minutes or so…My WWAN card was online and I was testing range of the WiFi. Walked out of my office to the bedroom and saw the WiFi shutoff…

So I came back to the router and the only lights on were the main power and 2 blue lights.

I have not been able to get the board to boot into NAND or EMMC and get no output when connected via serial. The board just bricked itself.

Anything we can do to revive the board?

Thanks

2

You can try mtk_uartboot,but when bricked while running sounds like hw issue

https://wiki.fw-web.de/doku.php?id=en:bpi-r3mini:start#fix_bricked_boot

3

I have this same issue. I think it’s done.

4

Have you tried removing the wwan card?

5

Ok. I was able to get some out put now. With the selector switch set to Nand, I get:

NOTICE: NMBM management region starts at block 960 [0x07800000] NOTICE: NMBM has been initialized in read-only mode ERROR: BL2: Failed to load image id 3 (-2)

From here…Do I follow the instructions in your post @frank-w to try to reflash EMMC or should I be trying to reflash Nand?

Thx!

6

Basicly it does not matter which storage you flash first it only depends on system used…afaik openwrt has specific order,but i do not know for r3mini

Maybe this helps:

https://openwrt.org/toh/sinovoip/bananapi_bpi_r3_mini#installation

7

I am guessing this is hardware issue. This is first error in the chain when I try to flash the Nand :frowning:

root@ROOter:/tmp#mtd write /tmp/openwrt-r3-mini-snand-preloader.bin /dev/mtd0

ubidetach -m 1

ubiformat /dev/mtd1

ubiattach -m 1

volsize=$(wc -c < /tmp/openwrt-r3-mini-snand-bl31-uboot.fip)

ubimkvol /dev/ubi0 -N fipCould not open mtd device: /dev/mtd0 Can’t open device for writing! root@ROOter:/tmp# root@ROOter:/tmp# ubidetach -m 1 $volsize -t static

8

Do you have the mtd1 device? Mhm,but imho ubiformat should fail too,right? Or is it still running in background and blocking the mtd device?