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Can you supply screenshots? Anything that illustrates the problem would be welcome. I am trying to see if the problem is syntax or is the problem located in flash memory.
Reset Steps
Boot to OS
Decline initial config
enable mode
show start
show ver
show flash show env all
show POS
Then use the dir flash command;
dir flash:
Shows files in flash mem
delete flash: command will erase files in flash memory
syntax:
delete ...