I am trying to access Beagleplay DFU but it doesnt work. I corrupted eMMC and now I am able use prebuilt bootloaders (tiboot3.bin, tispl.bin, u-boot.img) for android via microsd card. But if I dont insert microsdcard and hold pushing USR button, it should switch to backup mode DFU mode and it should try to boot from USB right?. I could not achieve that. I list the usb devices there is no VID 0x0451 and PID 0x6165. I changed cables, tried different computer, it did not work. I appreciate any help. Thank you.
Were you able to resolve this problem? I just ran into it myself with a custom board using Beagleplay reference design.
Getting the Boot ROM from the Beagle Play to start in DFU mode is a bit tricky. DFU Mode being a “backup” mode it can take some time (~10s) before it triggers.
The following references give some more detail on how to start Beagle Play in DFU mode:
- AM62x Beagleboard.org Beagleplay — Das U-Boot unknown version documentation
- Beagle Play — ti-android-15 documentation
Hope that helps.