It is much more difficult with x2 because here the charging port is not part of the cartridge but it is in a separate box and has to be removed via the front light. It requires among others the removal of the handle bar, the front wheel and the fork from the frame.
He gives a great step by step description, but I still would have benefitted by smaller and more detailed steps and especially by photos.
Once you've got the box with the charging port out - it took me 4 hours!! - the easiest part starts. The x2 charging port looks somewhat different than the s2 charging port once you've opened the box - I needed true force and a screwdriver to open it after removing the screws-, but thanks to this fixing guide - THANKS! - and the photos, you'll know what to do.
I haven't put my x2 back together yet so no idea if in the end I will have waisted a day of my life or will be truly happy:-)