You're right.Solve by upgrading the boot code (only via tftp or scp)Thanks

Cisco SG300-10 same issue with firmware 1.4.0.88sx300_fw-14088.ros (File size 7,4Mb)SHA1(sx300_fw-14088.ros)= af6d3fbd68cf1000b0b2b6adae2760c994c04021MD5(sx300_fw-14088.ros)= 66ab3618cb29023da5ce7c2177e6c3d4The copying of the image stops at 7Mb (http...