On Fri, 27 Dec 2024 01:10:18 -0800 (PST) bix64000 <[email protected]> wrote:
Hi, > Hello, > I have a A33/z7213 powered device that I am trying to get in FEL mode at > boot through the power/data micro-USB cable connected to the PC host. I > have seen it done using fel_lib I think, What do you mean with "done using fel_lib"? fel_lib from sunxi-tools? I wouldn't know if there is a way to force FEL mode via the USB cable, if this is what you are after: the BootROM only enables the USB-OTG interface after it decided to enter FEL mode, which is either when it sees the FEL pin grounded, or when the other boot options don't provide a valid boot image. > but can't reverse engineer the > .exe to find out how. This exe does a "handshake" with the device, maybe by > sending a "version" message ? With "the .exe" you mean sunxi-fel.exe, or some other program? > The device itself is a mini console called "pc engine mini". > The device has no "recovery" or "FEL" or "reset" button. Does the device have an SD card slot? Then you could "dd" fel-sdboot.sunxi from sunxi-tools to an SD card, which should enter FEL mode when booted with the card in. If you have a serial console connected, it might help to flood it with "2"s when the system boots up: some Allwinner boot programs will enter FEL mode using this method. Cheers, Andre -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/linux-sunxi/20250105021243.0ff91227%40minigeek.lan.
