Well, just don?t do that! If you were going to hack or root your recently purchased Motorola Xoom, just postpone this performance a bit and if you did? Well, I do not know what to say. But let?s get back to those who were patient enough to use legal version of Xoom?s root. The reason is that if you?ll root or hack Motorola?s tablet, you won?t be able to get the upcoming 4G update that is heading Xoom?s way. I do not know all the ?little things? but no matter what ? try to stay on a safe side. But if you did the root, try to flash back to the stock ROM and relock the bootloader. This should help. Right now none can tell for sure the reason why we should expect this conflict between rooting and update but I guess that making something unofficially is always not that good. But we did our job here ? now it?s only up to you!