OK, so for anyone else in the UK that has just bought the Desire (Or another android phone) and wanted to put Google’s Navigation Turn by Turn feature on it, I have netted out the result of the above posts into a quick walk through. Apologies if it is a bit Noddy, but personally I like walk throughs, and hopefully it helps somebody else like these guys have helped me.
First off, on your PC you have to download the modded map pack from the following web link:
[APPMOD][04.03.10] Brut's Google Maps r6 (int nav, MT on Donut) - xda-developers
It is about 3MB in size, and you just need to download it onto your PC for the moment. Do, though check the Android version requirements on the page that the above is linked to, against what you have running on your phone before you do all this stuff..
Next you need to connect your phone to the PC, and be sure it is recognised as a disk drive, because you are going to use Windows Explorer to copy the file you just downloaded onto the SD card in your phone.
Now, when I first did this I just hooked the phone up to my pc (Laptop with XP), and it was instantly recognised as an HTC Android Phone – It said it had installed successfully and was now ready to use. However, I navigated to the “removable Disk (F)” that appeared in Windows Explorer, but when I clicked on it, it said "Please insert a disk into drive F". If this happens, then the reason is likely to be that your phone is set to connect to PC for "Charge Only". On the Desire, in settings, under "Connect to a PC", you can change the default connection option to appear as a disk drive, or you can have it prompt you each time you connect to a pc. Either change the default to be “Connect as a Disk Drive”, or disconnect it, then reconnect and watch the phone for a set of options to appear – Choose the “Connect as Disk Drive” option.
Assuming your phone is now accessible in Windows Explorer as a disk drive, go look at the folder structure and where you see folders such as mp3, create another folder in the same directory that mp3 appears in, (Called mine “Google TBT Maps” and then paste in the .apk file that you downloaded earlier.
Now disconnect your phone from the PC, else you won’t be able to do the next bit, as you need the PC to let go of the SD Card inside your phone.
Go out to the Android Market and search for “Astro”, and what you actually want is “Astro File Manager” by Metago. Now just install that. Once installed, run it and you will see a Windows Explorer type screen and you should be able to navigate to the folder and file that you just put in there. Click on the file and then select "Open App Manager", and then select Install when prompted.
If your phone is the same as mine, you will now get a warning message that tells you that your phone security settings prevent any app being installed that was not from the Market. You should however also see the option to go to settings, in which case just take it and then untick that security option once you get to the relevant screen.
You will now return to the app you were trying to install, and so again just hit Install and it should now do so.
What will happen is that you will see another identical Maps icon to the one that you already had, but this one will have the word “BRUT” on it in red. Click that to start the maps, and then when it has loaded, simply hit the Menu button and choose “Directions”, and put in your start and finish places and then hit GO. You will now see a list containing:
Start
Finish
Show On Map
NAVIGATE <<<<<<<<<<<<
Directions
If you do this on your phone before installing the modded maps, you will NOT have the NAVIGATE feature.
Click on Navigate and you will now be asked which app you would like to use to do this and you will see both Map icons available – Choose the one with BRUT on it in red. (I ticked the option to make it default for that action).
You’re done!!!