hi evry one
i have 1 bad block in my routerboard 450G nand storge
when i set clock and make reboot the clock is reset again
i need set my clock
and i try NTP clint with server
192.43.244.18
set old time

If have it configured to write to memory a lot you'll eventually start seeing bad blocks. It's just normal wear on the flash memory. If it's new, then it could be a problem.

Routerboards don't have a persistent clock so it will get reset when you reboot. That's why it's important to set up NTP, just be sure to allow UDP port 123 from your configured NTP servers in the input chain.

We have been working to restart the device after you select your NTP server

But when the time setting manually is not set and the final is set in one of the attempts to restart the work after the return date shall be the same as old 1 - January -1970

after restart, you need to wait until the clock syncronises with NTP server, this is normal.

1 bad block is also normal. up to 100 bad blocks is completely acceptable.