AM625: TI AM62x Boot Loop - u-boot.img DFU Transfer Fails, Reverts to Init State

Part Number: AM625

Description:

I'm experiencing a boot ROM loop on a TI AM62x custom SOM during DFU recovery (Shorted DFU Pins -- connection removed after the DFU device is seen via the computer). I am unable to access the serial console access.

Boot Sequence:

1. tiboot3-am62x-hs-fs (bootloader) - uploads successfully
   1. $dfu-util.exe -R -a bootloader -D tiboot3.bin-dfu
2. tispl.bin - uploads successfully
   1. $dfu-util.exe -R -a tispl.bin -D tispl.bin
3. u-boot.img - FAILS: hangs for ~3 seconds, then device reverts to initial DFU state
   1. $dfu-util.exe -R -a u-boot.img -D u-boot.img
4. Never reaches kernel or RNDIS stage

Symptoms:

• First two stages complete without error
• u-boot.img transfer appears to start but doesn't complete
• Device re-enumerates in DFU mode (back to initial state)
• No error message from dfu-util
• Cycle repeats indefinitely

What I've tried:

• Verified u-boot.img file integrity
• Different USB ports/cables
• Removed -R flag (no change)
• Increased timeouts between stages

Hardware: Custom AM62x SOM
Tool Version: dfu-util (Windows)

Any guidance appreciated - currently unable to recover the device.