Firstly, please have a little patience. Â It can often take several hours or even days for someone with the right knowledge to appear. Â Also, there are a set of posting guidelines which politely request that you use proper words.
Are you wanting to completely uninstall Rockbox? Â This is described in section 2.6 of the manual. Â If you are just wanting to boot into the Apple OS once, then take a look at section 3.1.3