How to enable Write Protect on a flash drive in Ubuntu?

Question

USB flash drives

You need to burn the installation USB flash drive with the system and you need to protect it from writing ..
Google did not give results, only how to remove the protection it finds.
In particular sudo hdparm -r0 /dev/sdb
, I changed 0 to 1 - it seemed like the recording was turned off, but apparently not the flash drive itself, but only the USB input. when changing the flash drive, it was not written to the replaced one, but Write Protect remained in off
How to prevent the flash drive itself from writing after writing an image to it?

Answer 1

I don't need another flash drive...
I need to enable WriteProtect on the existing one for a couple of days...