Reset image for FX30 Cat-M to clean overlay

IoT Gateways FX30
11

I tried on WP76, I can still use fwupdate after deleting the userapp partition:

root@swi-mdm9x28-wp:~# cat /proc/mtd|grep userapp -i
mtd15: 08300000 00040000 "userapp"
root@swi-mdm9x28-wp:~#
root@swi-mdm9x28-wp:~# fwupdate query
Connecting to service ...
Firmware Version: SWI9X07Y_02.28.03.03 000000 jenkins 2019/05/21 03:33:04
Bootloader Version: SWI9X07Y_02.28.03.03 000000 jenkins 2019/05/21 03:33:04
Linux Version: 3.18.131 #1 PREEMPT Mon Oct 19 01:35:30 UTC 2020
root@swi-mdm9x28-wp:~#
root@swi-mdm9x28-wp:~# flash_eraseall /dev/mtd15
flash_eraseall has been replaced by `flash_erase <mtddev> 0 0`; please use it
Erasing 256 Kibyte @ 82c0000 -- 100 % complete
root@swi-mdm9x28-wp:~#

root@swi-mdm9x28-wp:~# fwupdate query
[364619.800059] UBIFS error (ubi3:0 pid 918): ubifs_read_node: bad node type (255 but expected 2)
[364619.807853] UBIFS error (ubi3:0 pid 918): ubifs_read_node: bad node at LEB 470:110592, LEB mapping status 1
[364619.818980] Not a node, first 24 bytes:
[364619.821820] 00000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff                          ........................
Connecting to service ...
Firmware Version: SWI9X07Y_02.28.03.03 000000 jenkins 2019/05/21 03:33:04
Bootloader Version: SWI9X07Y_02.28.03.03 000000 jenkins 2019/05/21 03:33:04
Linux Version: 3.18.131 #1 PREEMPT Mon Oct 19 01:35:30 UTC 2020