I fully agree it won't be easy and it will be practically impossible. Out of curiosity; I can't imagine that there are only files being removed, some other files might me changed? Edit, the file garmin\garmindevice.xml seems to be the only file changed (not deleted) while activating the car. Some interesting snippets:
Code:
<Model><PartNumber>006-D4823-91</PartNumber><SoftwareVersion>2518</SoftwareVersion><Description>NTG5E</Description></Model><Id>MYDEVICEIDWASHERE</Id>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
<Unlock><Code>BLABLACODECHANGED</Code></Unlock>
Code:
<VinNumber>MYCARVINNUMBERWASHERE</VinNumber><Volumes><Volume Name="Internal-0" Id="MYDEVICEIDWASHERE" Free_space="536870912" Permissions="1"/></Volumes></OEMDeviceExtension>
Code:
<Ifix>SOMECODEWASHERE</Ifix><CID>SOMECIDWASHERE</CID></AOEMDaimlerExtension></Extensions></Device>
I thought this was already tested and didn't work as well? I would be happy to try this if there's a downloadable image for V5.0 32GB cards which doesn't take ages to download. For my card, unfortunately it is already attached to the car.