Sansa Clip Zip Firmware 01.01.12

Hi,

Thanks for the reply,

I know this, but I am looking for a real solution, its too easy to turn it back on

We are selling it to communites were radio is not allowed! so I need a permanant solution or something like the clppg.bin which we had for the sansa clip +

Is there a more effective solution for that?

I would appreciate any help