You need to dehash the syscon checks. To do this simply enable "QA Flag Toggle" on your PS3. Follow these steps to QA Flag your PS3...
1) Download and install the newest version of the Rebug Toolbox.
2) Run the Toolbox and get to the pseudo-XMB.
3) Scroll all the way to right-most column and at the top it should say "QA Flag Toggle."
4) Enable this.
5) Restart your PS3 then update using the Recovery Menu.
6) Success!