I noticed a folder named "BUD" on the SD card of my Android 4 phone, containing 5 10-byte files with .med2.gz extensions. The .med2 files are empty. What is this clutter? This thread didn't help, nor did Google know what a .med2 file is.

Mysterious BUD folder with med2.gz files

1 Answer 1


Sorting all files by their modified date, i noticed the mystery file dates match with those of the Navfree app i used at that time. So aside from being slower than its previous version, it also litters temp files all over my card.

Navfree clutter

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .