FAP221B factory.bin binwalk

$ binwalk openwrt-ath79-generic-fortinet_fap221b-squashfs-factory.bin

DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             Squashfs filesystem, little endian, version 4.0, compression:xz, size: 3204910 bytes, 957 inodes, blocksize: 262144 bytes, created: 2022-10-14 22:44:41
9437184       0x900000        uImage header, header size: 64 bytes, header CRC: 0xE05036E5, created: 2022-10-14 22:44:41, image size: 2234083 bytes, Data Address: 0x80060000, Entry Point: 0x80060000, data CRC: 0x23E32CBC, OS: Linux, CPU: MIPS, image type: OS Kernel Image, compression type: lzma, image name: "MIPS OpenWrt Linux-5.10.146"
9437248       0x900040        LZMA compressed data, properties: 0x6D, dictionary size: 8388608 bytes, uncompressed size: 7607153 bytes
9464195       0x906983        LANCOM OEM file