Motorola v545 no longer syncs with version 2.4

Question

Hello everyone,
I have a Motorola V545, and had over the last couple of OS updates, managed to get iSync to recognise my phone following some excellent instructions on this forum. These are:
1. Open a finder window and browse to the Applications directory (and quit iSync if it's running).
2. Command-click on iSync and select "Show Package Contents"
3. Go to Contents/Plugins/ApplePhoneConduit.syncdevice/Contents/Plugins/PhoneModelsSync. phoneplugin/Contents/Resources/MetaClasses.plist
4. Do a find for V600 and change all instances of "V600" to "V545".
5. Duplicate the MOTV600.tiff image and rename MOTV545.tiff
6. Fire up isync and add a new device
This worked perfectly until the latest OS update. Previously, I think I was running version 2.2, now it is 2.4. Now, when I ask it to add a new device, it says 'No devices found'.
When following the instructions, it changed 8 instances of v600 to v545 - the same amount as previously, as best I can recall.
Does anyone know why this no longer works, or what I have to to get my phone recognised?
Many thanks.
Quicksilver G4   Mac OS X (10.4.7)   Programmes in regular use are Freehand, Photoshop, Freeway, Keynote, iMovie, iDV
Quicksilver G4   Mac OS X (10.4.7)   Programmes in regular use are Freehand, Photoshop, Freeway, Keynote, iMovie, iDV
Quicksilver G4   Mac OS X (10.4.7)   Programmes in regular use are Freehand, Photoshop, Freeway, Keynote, iMovie, iDV

Answer 1

I think I fixed my problem with iSync 2.4 not working after the 10.4.9 update... then found another problem which also seems fixable.
The following were other steps I tried first, which didn't fix the problem but might be tried if the solution below doesn't work on its own:
* Delete snycState.plist and sync.plist from ~/Users/[user]/Library/Application Support/iCal/
* Removed device from iSync
* Renamed phone on the phone's Bluetooth menu
* Added device (under new name) in iSync
But what finally got the the sync to work was when I looked at the ownership and permissions on my ~/Users/[user]/Library/Phones/[device name].phone file.
My username (as the owner) said "Read & Write," but when I clicked to look at Details, it also had my username as a group, which only had "Read" permissions.
I changed this Group permission to "Read & Write," the Others permission to "Read & Write," and clicked the button to apply changes to enclosed items. The next sync finally worked.
However, the very next sync after THAT failed again. If you find the same, then try this...
With tinkering, I found it would sync my Address Book, and it would sync two of my five iCal calendars. Most likely, because these were two small calendars that did not have repeating events (or the repeating events were detached). But when I would include any of the other three calendars, the sync would fail with the same error message as before.
The fix seems to be: export the troublesome calendars, and re-import as new calendars. When I did this, they were synced without a problem.
Given the timing of the problem -- popping up just after our new Daylight Savings Time switch -- I suspect the problem has something to do with this. Perhaps a fresh export/import clears up this confusion.