lumia 810 “other” storage preventing update

First off, I dont want microsofts I could care less default response cause its a bunch of ****. I have 4gb in my other storage and it cannot be removed. What measures have I taken? I've deleted all pictures, non stock apps, all SkyDrive pictures, turned SkyDrive off, used shrink storage app, and deleted all contacts. Still 4 gb in other. Now according to you guys this space should make itself available as needed correct? Well I've tried to download the amber update about 5 times. I have 1.16gb of free space but it still says you must make ***.**Mb storage available. Getting pretty fed up with it.