I counted about 15 pieces lite5 which are from 0.1 to 0.5% bad blocks, which one of them disappeared configuration of VPNs.
Lite5 than have the time.
Could defect lite?

This is a very small number of bad blocks, and will not affect the device performance in any way. You should not be worried, this is acceptable. RouterOS doesn't use the blocks marked as bad.

which one of them disappeared configuration of VPNs.

please make sure you are running the latest RouterOS version 6.11, and send a supout.rif file to support. It is probably related to something else.

This is a very small number of bad blocks, and will not affect the device performance in any way. You should not be worried, this is acceptable. RouterOS doesn't use the blocks marked as bad.

it is very funny hahaha new antenna and already damaged

which one of them disappeared configuration of VPNs.

please make sure you are running the latest RouterOS version 6.11, and send a supout.rif file to support. It is probably related to something else.

6.11 is crappy, bug, bug, bug.

Every restart, setting vpn (secrets) disappear

According to chip NAND manufacturer, this is acceptable number from NAND chip factory.

Every restart, setting vpn (secrets) disappear

This is not related to your blocks. The bug is fixed in v6.12, you can email support and ask for test version, if it is very urgent.

According to chip NAND manufacturer, this is acceptable number from NAND chip factory.

Every restart, setting vpn (secrets) disappear

This is not related to your blocks. The bug is fixed in v6.12, you can email support and ask for test version, if it is very urgent.

I have a 5.26 everywhere and anywhere will only work where there are bad bloks disappears.

According to chip NAND manufacturer, this is acceptable number from NAND chip factory.

Every restart, setting vpn (secrets) disappear

This is not related to your blocks. The bug is fixed in v6.12, you can email support and ask for test version, if it is very urgent.

I have a 5.26 everywhere and anywhere will only work where there are bad bloks disappears.

Blocks don't disappear. The only explanation could be, that v5.26 doesn't count them correctly ...

When will the very stable version 6.x ?

When will the very stable version 6.x ?

RouterOS v6.12 will have the fix for your VPN problem