Oooff… I’m not going to lie, when you said the APIM had only 3MB left I though that it could not be possible based on how Sync3 processes packages, but boy I was wrong.
Also, your file contains your VIN, if you want that hidden just let me know.
About options, have you tried performing a master reset?. If no, then try that and see if that frees some space up.
Another things you can try after the master reset:
- remove gracenotes
- try installing the small voice package
- then try to install 3.3 (which is smaller than 3.4)
Even though this is straightforward and can be done via Syn3updater, you can find instructions here → Sync 3.4 NON-NAV APIM: Failure to Update to Newer Version Sync 3.4
After all that is done, you may have enough space to trigger a reformat.