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Renate · 07-31-2022, 03:13 PM

Mmm, then that means that things are working well enough that it's not going to the ROM bootloader, but bad enough that it's not going anywhere.

I don't really have that much interest in Allwinner/Glow '21, but I took it apart looking for the test points to put it into FEL mode (analogous to Qualcomm EDL mode). I couldn't find any, but the u-boot does accept the "efex" command which puts it into FEL mode. I wrote a proof-of-concept FEL client and that works:

Code:

C:\>allwin
Found FEL device
AWUSBFEX 00175500 00000001 0001
Model sun8iw15

You're shooting in the dark, at the least you need to hook up a 3.3V UART to get some feedback on what it's doing.
It's the through-hole connector on the left, from the top, Gnd, RX (in), TX (out), 3.3V.
If you're lucky, you can stop the boot and put it into fastboot.
Still, to go any further with that you'd have to get your device into FEL mode and you'd need a real FEL/FES client.
https://github.com/linux-sunxi/sunxi-tools

07-31-2022, 03:13 PM	#460
Renate Onyx-maniac Posts: 3,984 Karma: 18026955 Join Date: Feb 2012 Device: Nook NST, Glow2, 3, 4, '21, Kobo Aura2, Poke3, Poke5, Go6	Mmm, then that means that things are working well enough that it's not going to the ROM bootloader, but bad enough that it's not going anywhere. I don't really have that much interest in Allwinner/Glow '21, but I took it apart looking for the test points to put it into FEL mode (analogous to Qualcomm EDL mode). I couldn't find any, but the u-boot does accept the "efex" command which puts it into FEL mode. I wrote a proof-of-concept FEL client and that works: Code: C:\>allwin Found FEL device AWUSBFEX 00175500 00000001 0001 Model sun8iw15 You're shooting in the dark, at the least you need to hook up a 3.3V UART to get some feedback on what it's doing. It's the through-hole connector on the left, from the top, Gnd, RX (in), TX (out), 3.3V. If you're lucky, you can stop the boot and put it into fastboot. Still, to go any further with that you'd have to get your device into FEL mode and you'd need a real FEL/FES client. https://github.com/linux-sunxi/sunxi-tools Last edited by Renate; 07-31-2022 at 03:15 PM.