I would only slightly disagree, IOS36 is one of the few IOSs I like having patched. Instead run Dop IOS using IOS50 to install a clean IOS30 v1040 (you can also do this by installing the IOS30 v1040 wad uding wad manager, u can get the wad using nus downloader)
EDIT: just want to clarify, what longtom said is correct, but his method will only work because you still have a bugged IOS250 (which u will need to re-install everything, just follow xzxero's standard softmod instructions, but use IOS250 instead of IOS36 where applicable... but if you install a clean IOS30 instead of IOS36, you can use the exact same steps you used before)