Hi Wayane…
I have followed these two suggestions
https://forums.developer.nvidia.com/t/unable-install-any-jetpacks-jetson-tx2/59810/31
https://forums.developer.nvidia.com/t/unable-to-flash-3-jetsen-tx2-units-with-4-2-2/83112/10
By the following above i was able to run the flash script. but as noted in the above posts the script hangs at this point ‘tegrarcm_v2 --isapplet’
[ 0.8208 ]
[ 0.8209 ] Boot Rom communication
[ 0.8237 ] tegrarcm_v2 --chip 0x18 0 --rcm rcm_list_signed.xml
[ 0.8263 ] BootRom is not running
[ 5.9764 ]
[ 6.9792 ] tegrarcm_v2 --isapplet
[ 1011.8007 ]
[ 1011.8042 ] tegradevflash_v2 --iscpubl
[ 1011.8087 ] CPU Bootloader is not running on device.
[ 2027.6092 ]
[ 2028.6136 ] tegrarcm_v2 --isapplet
[ 3043.4166 ]
[ 3043.4207 ] tegradevflash_v2 --iscpubl
[ 3043.4251 ] CPU Bootloader is not running on device.
[ 4059.2247 ]
[ 4060.2288 ] tegrarcm_v2 --isapplet
[ 5075.0320 ]
[ 5075.0352 ] tegradevflash_v2 --iscpubl