BPI-R3 Mini Bricked, cannot boot to NAND or eMMC and no Handshake with UART

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

Hi All,

Thanks to everybody who has posted solutions in other threads but I’m totally stumped here. I don’t know what happened but my R3 Mini just stopped booting a while ago. I’ve tried all of the following to recover:

FT232RL UART device - No Handshake on both Linux and Windows using mtk_uartboot CH340 UART device - no Handshakre on both Linux and Windows using mtk_uartboot USB-C Serial device - no output. Boot from NAND - nothing Boot from eMMC - nothing

the PWR LED and W2G and W5G LEDs come on but no SYS.

I’ve tried all the settings on both of my serial adapters. I’ve tried using power from both a PC and a USB power brick. I’ve tried multiple different USB 2.0 and 3.0 ports.

Can anybody help me out please?

2

I guess there are no ways when uart is broken too…have You used external ch340? Be careful as the are mostly 5v.

3

definitely used an external CH340 device. the one I have has both 5v and 3v3 options

4

Any update? I have same problem

5

Nothing. And no response to my email to sinovoip directly either. Very disappointing.

1 Like
6

You should see some codes after switching on the board, with 3.3v uart connected.

Otherwise, board or uart is dead.

Or uart is connected wrong…

7

uart is connected correctly, previously it was running without problems. is it possible that the board died due to overheating? but the pwr and wifi led are on

8

Same here. Leds on, no codes.

9

There are many boards with a dead SOC (R3/R4). Is it possible to buy SOC chip from @sinovoip?