RUT955 mtdblock1 file corrupted again

half a year ago I had this problem: RUT955 firmware update via cli fails with "sh: out of range" and "Image check failed" - Crowd Support Forum | Teltonika Networks
and now it happened again:

root@Teltonika-RUT955:~# hexdump -C /dev/mtdblock1
00000000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00000070  30 30 30 30 ff ff ff ff  ff ff ff ff ff ff ff ff  |0000............|
00000080  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00010000
root@Teltonika-RUT955:~#

Hello,

After the issue was fixed, it was most likely recommended to stay on the newer firmware, as this was patched after v7.2.7. In order to resolve the issue that you are currently experiencing, additional provision of further confidential details is required. Hence, it is recommended that you reach out to your designated sales manager or the reseller from whom you acquired the device in question. They will be able to assist you in addressing this matter more effectively.

Best regards,