neetesh saxena wrote:

saxena@cosec-ug-vm1-04:/opt/osmocom-bb/src/host/osmocon$ sudo -E ./osmocon -p /dev/ttyUSB0 -m c123xor ../..target/firmware/board/compal_e88/layer1.compalram.bin

seems that you are missing a "/" before "target":

sudo -E ./osmocon -p /dev/ttyUSB0 -m c123xor ../../target/firmware/board/compal_e88/layer1.compalram.bin