[lime-users] Cannot upgrade NSM5 to ExpansiveEmancipation: Invalid image type.

Hello. Yesterday I upgraded a Nanostation M5 XW and it worked ok. Today I have here a Nanostation M5 that has a working LiMe 16.07. I am trying to upgrade it to ExpansiveEmancipation, but I get an error: root@nsm5:/tmp# ls -hal | grep .bin -rw-r--r-- 1 root root 4.8M Jun 12 19:08 openwrt-ath79-generic-ubnt_nanostation-m-squashfs-factory.bin root@nsm5:/tmp# root@nsm5:/tmp# root@nsm5:/tmp# sysupgrade -n openwrt-ath79-generic-ubnt_nanostation-m-squashfs-factory.bin Invalid image type. Image check 'platform_check_image' failed. root@nsm5:/tmp# How should I troubleshoot it? Thank you