Asus follows suit of HTC and provides a tool that unlocks the bootloader of the Transformer Prime. The procedure is not all daisies, though, the downsides are worth considering if you aren’t a hundred-percent sure of what you’re doing.
The new unlock tool is available to those customers who run Ice Cream Sandwich on their tablets, downloadable here (select Android, Utilities).
The bootloader unlock utility is tailored to those who want to take full control over their Transformer Prime. By removing the lock, you can install custom ROMs, different versions of Android or any operating system that runs on the tf201. Since the development had been shunted by the locked bootloader, there aren’t many customizations you can apply to your tablet just yet. If there is going to be a new ROMs coming, it will be announced on the XDA forums.
Please note that removing the lock with the tool provided by Asus voids warranty, shuts you out of further official software updates, not to mention the mysterious sounding warning at the end of the first paragraph of legalese, “your purchased digital content may also be affected.”