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CCS/CC2640R2F: stuck in DFU mode with serial number 00000000

Part Number: CC2640R2F

Tool/software: Code Composer Studio

stuck in DFU mode with serial number 00000000

xdsdfu.exe -s 00001234 -r

or

xdsdfu.exe -b boot_loader.bin -r

these commands don't fix this issue.

.\xdsdfu.exe -e

USB Device Firmware Upgrade Utility
Copyright (c) 2008-2018 Texas Instruments Incorporated. All rights reserved.

Scanning USB buses for supported XDS110 devices...


<<<< Device 0 >>>>

VID: 0x1cbe PID: 0x00ff
Device Name: Tiva Device Firmware Update
Manufacturer: Texas Instruments Incorporated
Serial Num: 00000000
Mode: DFU

Found 1 device.