now I see your post again.
681 243.998038 192.168.1.108 192.168.254.254 TFTP 111 Read Request, File: upgrade_info_7db780a713a4.txt, Transfer type: octet, timeout=1, tsize=0, blksize=1468
690 245.171387 192.168.1.108 192.168.254.254 TFTP 92 Read Request, File: failed.txt, Transfer type: octet...