checkpick dev
err
Revert "err"

This reverts commit 022ec4ff7753b01667c86ea32387e028f88a178c.
Revert "checkpick dev"

This reverts commit 2fe89c15f6b67845cf312221d4b9c5fca0c7ed2d.
finish wireless upgrade with ip & connect 2 specific server
complete wireless upgrade
add len > 0 && len < SERVER_IP_MAX_LEN