Hack the nav - enable trip computer and AC

[notyourdaddy]

i can tell you that on the '04 TL (older generation navi), the files were all in the bin just not linked in the on screen menus. There has also been good progress made with a modifed version of TSX utility that works with the newer Honda nav units. Unfortunately, my ridgeline isn't here right now, so i can't look at the disc to see what i can find.

I believe its possible to get the screens up with some software tweaks, but i have no clue about the data on them. It was stated here by someone far smarter than i that modified hardware would be needed to get this working right.

I can tell you that the TL required only 1 modified file and it enabled AC, Trip and a button to access the diag menus all from the info screen.

[notyourdaddy]

theres a sizable number of files that are different between the ridgeline and the others that have this feature. probably over my head. here's to hoping someone else comes along to the rescue...

[balook]

Looks like this effort may be stalled, but as I just got my Ridgeline and I am very interested in making it happen. I was able to copy the factory DVD and the copy is working in my NAV. I used Verbatim DVD+R DL rated for 2.4X. The software was Roxio Creator Classic using Data Disk mode. I set it for DVD-ROM as well.

[KenBot_314]

I am a programmer, and just got my ridge on Jan. 9th. I was very bummed to hear that there is no trip computer by default and then excited to read that it *may* be able to be enabled with software. I have actually done a bit of reverse engineering in the past, so I checked out the files on the DVD... It seems that the file structure is different than it was in the 04's models of other vehicles that were hacked in the past... Those hacks relied on modifying exe files inside the bin file. I extracted the bin, and instead of having that data in exe files, they seem to be contained in dll files now. This is unfortunately a bit above my head. All my "hacks" (white-hat, i swear) in the past have been with windows programs, where I could run the program and debug in real time. I wouldn't even know where to begin trying to hack these files
Bummer!

[Lingered_I]

Here's a starting point. The splash screen has been done. No news on the nag screen or trip functions yet.

Changing the Navi Splash Screen

[KenBot_314]

Originally Posted by Lingered_I

Here's a starting point. The splash screen has been done. No news on the nag screen or trip functions yet.

Changing the Navi Splash Screen

Thanks! I actually got the files extracted fine, and I found the nag screen text in HMIManager.dll in the 07Touch2.bin file... unfortunately, after using a hex editor to edit the nag screen, I was not able to get the dll back into 07Touch2.bin. I gave up at that point. I was really excited about having the ability to at least change that nag text, even if I couldn't get rid of it completely...
I will have to try the splash screen edit.

[Lingered_I]

This has rekindled my interest in this whole subject. I'm in the process of extracting all the files and have installed the Windows CE emulator on my PC. I'm wondering if the trip computer is related to Telemetrics.exe. AirconProcess.exe and AirConControl.dll look promising too.

[Nailing Malarkey]

Originally Posted by Lingered_I

This has rekindled my interest in this whole subject. I'm in the process of extracting all the files and have installed the Windows CE emulator on my PC. I'm wondering if the trip computer is related to Telemetrics.exe. AirconProcess.exe and AirConControl.dll look promising too.

Any idea which is the boot program?

I have IDA PRo_5.0.0.879_advanced but not sure how to get started with the dissambly or which file to start with.

[KenBot_314]

Ok, so I have spent a bit of time playing with the disassembled code...
I really don't have the time to really devote to this for the next couple of weeks... too many work commitments... but, it seems like all we would need to do is find the jump reference that calls the suspend mode if OK isn't pressed, and find the jump reference that calls the normal mode of OK is pressed. once we have those two... we would simply need to change it so that if OK isn't pressed, it calls normal mode instead of suspend mode... OR what would be even less annoying... we could call the normal mode instead of calling the nag screen in the first place. just ideas.. what do you think?

[Lingered_I]

To be honest I've been concentrating on the Trip Computer functionality, but your reasoning on the OK button seems logical. Talk about a needle in a haystack. Hopefully it will get easier as the pieces fall into place.