You're welcome. A firmware usually requires a USB connection or at least a stable one when trying to download it from the website. Unfortunately you are only going to be able to do a firmware update with a computer. This printer doesn't offer another way to do this. You need to determine if you have the latest firmware update by printing off the network configuration page. Page 29 of the User Guide gives you the instructions on how to print this off simply by pressing the cancel button until the ready light flashes and begins to print.
After this page prints, you can determine which version you have by looking under the section at the top called Product Information. I printed my page off and it says my current version is 20130213 (which is the most up-to-date one). I am afraid you would not want to do this on your iPad to risk dropping the connection. Interrupted firmware updates are known to completely break printers.
Do you have access to any kind of computer at all? I will gladly assist you with it if you can get to one.
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