FX30 Yocto add user and SSH authorized keys

[jyijyi]

You can use this command to see the mtd partition

Free (small) partition for storing serial number?

do you mean this? root@swi-mdm9x28-wp:~# more /proc/mtd dev: size erasesize name mtd0: 00280000 00040000 “sbl” mtd1: 00280000 00040000 “mibib” mtd2: 00680000 00040000 “backup” mtd3: 00100000 00040000 “security” mtd4: 00200000 00040000 “persist” mtd5: 01180000 00040000 “efs2” mtd6: 05040000 00040000 “swifota” mtd7: 00100000 00040000 “tz” mtd8: 00080000 00040000 “rpm” mtd9: 02080000 00040000 “modem” mtd10: 00100000 00040000 “aboot” mtd11: 00f00000 00040000 “boot” mtd12: 01e000…