Unzip FlyIIFeatureUpdate4.exe into a temporary directory on your hard drive.

You must have at least 75 MB of free space on the drive you are running this feature update.

Run FlyIIFeatureUpdate4.exe and follow the prompts.

This file will then update your Fly! II files and add the latest features.

You MUST run the file and not just copy it into the Fly! II directory.

All of these files must be run from a hard drive and can not be executed from a CD-ROM.

If you get an error message during the patch process, you should do the following:

1. Uninstall Fly! II
2. Delete the Fly! II directory
3. Install the release version of Fly! II
4. Apply the Fly!IIFeatureUpdate1.exe file (bringing the Fly! II version up to 164)
5. Apply any optional aircraft
6. Apply the Fly!IIFeatureUpdate2.exe (bringing the Fly! II version up to 177)
7. Apply the Fly!IIFeatureUpdate3a.exe (bringing the Fly! II version up to 197)
8. Apply videoupdate2 (where applicable)
9. Apply the Fly!IIFeatureUpdate4.exe associated with the readme.txt file.

If none of the core files with Fly! II have been altered, then there should not be any patch errors.
Some users have reported failures during the patch process and this seems to be related to hardware
memory issues.

Read the version.txt for version changes.