Actually I do not think it is just a patch although the complete code. I think the reasons the softwre guys said "required" that you update from V26 is so that they had a baseline to work from. If some people were reporting errors it would be easier to determine that the issue stemed from the code or some legacy crap in there.

I could be todally wrong...., just ask my wife. I am sure she remembers enough times. :-)

Anyway I have jacked with this too much.

Here is where we stand.

1) You can change the logo with whatever build you want.
2) Whoever made the cool logo swap tool can add in a CRC check adjustment tool. The CRC24 bits are in each individual files so the process would be quite simple. Identify the CRC prior to making a change, and then update that line of code once you insert your custom logo. The poster Nomad figured out the process to adjust the CRC

Now, some users were reporting issues with the search feature not working properly. I did not try this, but I think the best goal would be too try and hack the V26 released code to add perpective mode. It might not be simple, but that would be the correct method.

So we have a few accomplishments.
1) a new tool for customizing your logo (just a small refinement will need to be made to adjust the CRC in the new file)
2) Ability to run perspective mode and the v26 firmware until you change it.
3) a baseline to start from in hacking out the extra features such as off road guidence, perpective mode, taxi mode (why I do not know) and other

At this point, I think it is left to the software pros on making those last changes.