Hello Andzey,
thank you for your answer to my question and the proposed solution to the problem!
The ssh request showed the following result:
C:\Users\norbe>ssh root@192.168.1.1
root@192.168.1.1's password:
BusyBox v1.34.1 (2021-08-31 22:20:08 UTC) built-in shell (ash)
____ _ ___ ____
| _ \ _ _| |_ / _ \/ ___|
| |_) | | | | __| | | \___ \
| _ <| |_| | |_| |_| |___) |
|_| \_\\__,_|\__|\___/|____/
---------------------------------
Teltonika RUT9 series 2022
---------------------------------
root@Teltonika-UNKNOW:~# hexdump -C /dev/mtd1
00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
*
00000070 34 33 30 36 ff ff ff ff 34 33 30 36 ff ff ff ff |4306....4306....|
00000080 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
*
00010000
root@Teltonika-UNKNOW:~#
Is this meaningful for the expert?
Thank you in advance for a short reply.
Best regards
Norbert