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CCS/TM4C1294NCPDT: trying to recover bricked XDS110 firmware

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: CC2650

Tool/software: Code Composer Studio

Background:

using a CC2650 launchpad (has XDS110 on-board emulator based on TM4C129), we tried to upgrade XDS110 firmware using steps described in this wiki.  However, both the boot_loader.bin and the firmware.bin have been erased and thus upgrading via XDSDFU utility does not appear to work any longer (imagine it needs boot_loader.bin or existing firmware.bin to update firmware).

based on the readme.txt file under "C:\ti\ccsv6\ccs_base\common\uscif\xds110", it suggests boot_loader.bin resides at 0x0000 and firmware.bin resides at 0x4000); however, it suggests that to recover using CCS, we need to load corresponding boot_loader.afx file which is nowhere to be found.

Can someone help with instructions on how to recover from bricked XDS110 emulator?  I imagine whatever software is required for XDSDFU utility to work must be first loaded to TM4C129 via CCS somehow.  Hence clear instructions and files to load (where are they?) to recover would be greatly appreciated.