I installed file lede-17.01.0-r3205-59508e3-mvebu-linksys-wrt3200acm-squashfs-factory.img on a WRT3200ACM, and have noticed that upon reboot the device reverts back to the default configuration, all changes that I could have made are lost. Browsing the kernel messages, I found some that seem relevant:
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.4.50 (buildbot@builds-02.infra.lede-project.org) (gcc version 5.4.0 (LEDE GCC 5.4.0 r3103-1b51a49) ) #0 SMP Mon Feb 20 17:13:44 2017
[ 0.000000] CPU: ARMv7 Processor [414fc091] revision 1 (ARMv7), cr=10c5387d
[...]
[ 1.395971] ubi0: attaching mtd6
[ 1.597695] ubi0: scanning is finished
[ 1.605795] ubi0: attached mtd6 (name "ubi", size 74 MiB)
[ 1.611216] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 1.618128] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 1.624948] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 1.631940] ubi0: good PEBs: 592, bad PEBs: 0, corrupted PEBs: 0
[ 1.637968] ubi0: user volume: 2, internal volumes: 1, max. volumes count: 128
[ 1.645222] ubi0: max/mean erase counter: 2/0, WL threshold: 4096, image sequence number: 1298559928
[ 1.654393] ubi0: available PEBs: 0, total reserved PEBs: 592, PEBs reserved for bad PEB handling: 40
[ 1.663664] ubi0: background thread "ubi_bgt0d" started, PID 643
[ 1.670029] block ubiblock0_0: created from ubi0:0(rootfs)
[ 1.675548] ubiblock: device ubiblock0_0 (rootfs) set to be root filesystem
[...]
[ 6.594733] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 744
[ 6.623113] UBIFS (ubi0:1): recovery needed
[ 6.648746] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 120832 bytes from PEB 161:4096, read only 120832 bytes, retry
[ 6.670767] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 120832 bytes from PEB 161:4096, read only 120832 bytes, retry
[ 6.692787] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 120832 bytes from PEB 161:4096, read only 120832 bytes, retry
[ 6.714804] ubi0 error: ubi_io_read: error -74 (ECC error) while reading 120832 bytes from PEB 161:4096, read 120832 bytes
[...]
[ 6.820019] UBIFS error (ubi0:1 pid 742): ubifs_leb_read: reading 120832 bytes from LEB 11:0 failed, error -74
[...]
[ 6.906613] UBIFS error (ubi0:1 pid 742): ubifs_recover_leb: LEB 11 scanning failed
[ 6.914319] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" stops
[ 6.920744] mount_root: failed to mount -t ubifs /dev/ubi0_1 /tmp/overlay: Bad message
[ 6.928758] mount_root: overlay filesystem has not been fully initialized yet
[ 6.936033] mount_root: switching to ubifs overlay
[ 6.940861] mount_root: switching to ubifs failed - fallback to ramoverlay
[ 6.980554] ubi1: attaching mtd9
[ 7.212534] ubi1: scanning is finished
[ 7.220752] ubi1: attached mtd9 (name "syscfg", size 86 MiB)
[ 7.226443] ubi1: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 7.233349] ubi1: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 7.240162] ubi1: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 7.247153] ubi1: good PEBs: 680, bad PEBs: 8, corrupted PEBs: 0
[ 7.253184] ubi1: user volume: 1, internal volumes: 1, max. volumes count: 128
[ 7.260434] ubi1: max/mean erase counter: 5/2, WL threshold: 4096, image sequence number: 2078512626
[ 7.269605] ubi1: available PEBs: 0, total reserved PEBs: 680, PEBs reserved for bad PEB handling: 32
[ 7.278868] ubi1: background thread "ubi_bgt1d" started, PID 757
[ 7.288228] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 761
[ 7.317371] UBIFS (ubi1:0): recovery needed
[ 7.385393] UBIFS (ubi1:0): recovery completed
[ 7.389879] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "syscfg"
[ 7.397310] UBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[ 7.407268] UBIFS (ubi1:0): FS size: 80375808 bytes (76 MiB, 633 LEBs), journal size 4063232 bytes (3 MiB, 32 LEBs)
[ 7.417747] UBIFS (ubi1:0): reserved for root: 3796347 bytes (3707 KiB)
[ 7.424391] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID CDCF7E85-9EA7-45CF-AA03-9913C61F026A, small LPT model
[...]
After booting, "df" returns this:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 2560 2560 0 100% /rom
tmpfs 256812 444 256368 0% /tmp
tmpfs 256812 64 256748 0% /tmp/root
overlayfs:/tmp/root 256812 64 256748 0% /
ubi1:syscfg 71908 444 67756 1% /tmp/syscfg
tmpfs 512 0 512 0% /dev
Any idea about this, please?