Removed the partition table on Oregon 750 device. Then re-created a new partition with a FAT32 file system with Disk Utility on Mac, and restored a backup with all files that were previously on the device. USB connectivity works well, all files were recovered, but...
The device boots up and then does not recognize its internal file system (map files are not recognized etc.)
Tried to create a new partition with DISKMGMT.MSC on Windows, but issue remains. Seems that the partition header of the device contains some "hidden" information that cannot be created from a PC. Is there a way to "bare-metal" recover the Oregon Device?