of course, the usb symbol should appear to know that the usb memory is connected but it does not already test several and with none but before doing the hack if it worked for me.
Then why don't you try to do a factory reset and uninstall the hack?
Don't get me wrong: If the hack, or whatever else you did, has really broken your scope's capability to use the USB port, I feel your pain. It's just that a connection with the hack is highly unlikely: The procedure has been known for years, and has been performed by many people on this forum and elsewhere. Nobody has ever reported this kind of problem. And the upgrade codes produced by the Riglol code generator are the same which Rigol sells you, so there is no good reason at all why they should "break" anything.
It seems much more likely that something else, unrelated to the hack, has caused the problem. Maybe you accidentally bumped against the USB stick while it was plugged in, and you broke a connection off the PCB?
It does not help the diagnosis that you only mention certain observations several posts later (and with an annoyed undertone too). I don't think you told us initially that you had already tried multiple USB sticks. And you only told us just now that, apparently, you realized all along that the root issue is that your scope does not even
recognize the USB stick, and does not show the USB icon.