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                      4images Update
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  1. Backup your data!

  2. First you should rename or copy your existing "config.php" to a temporary location.

  3. Decompress the .zip archive and upload all files to the same location as your previous
     installation. Overwrite the existing files.

  4. Next delete the newly uploaded copy of config.php and replace it with your existing
     copy (ie. rename or move back the copy you saved previously).

  5. If you update from version older than 1.5 or the folders don't exist,
     create in your "data" folder two new directories "tmp_media" and "tmp_thumbnails".
     Set permissions for this directories:

     chmod 777 (drwxrwxrwx) : data/tmp_media
     chmod 777 (drwxrwxrwx) : data/tmp_thumbnails

  6. You should now run the following update-scripts (in this order, one at a time)
     and follow the instructions.

       Update RC-1 -> 1.7.3
       ...............................
       1. update_RC-1_to_RC-2.php
       2. update_1.0_to_1.5.php
       3. update_1.5_to_1.6.php
       4. update_1.6.1_to_1.7.ph

       Update RC-2 -> 1.7.3
       ...............................
       1. update_1.0_to_1.5.php
       2. update_1.5_to_1.6.php
       3. update_1.6.1_to_1.7.ph

       Update 1.0 -> 1.7.3
       ...............................
       1. update_1.0_to_1.5.php
       2. update_1.5_to_1.6.php
       3. update_1.6.1_to_1.7.ph

       Update 1.5 -> 1.7.3
       ...............................
       1. update_1.5_to_1.6.php
       2. update_1.6.1_to_1.7.ph

       Update 1.6 -> 1.7.3
       ...............................
       1. update_1.6.1_to_1.7.php

       Update 1.6.1 -> 1.7.3
       ...............................
       1. update_1.6.1_to_1.7.php

       Update 1.7 -> 1.7.3
       ...............................
       - No update-script required

       Update 1.7.1 -> 1.7.3
       ...............................
       - No update-script required

       Update 1.7.2 -> 1.7.3
       ...............................
       - No update-script required

  7. You must ensure you remove "install.php" and any "update_*_to_*.php" files.
     Additionally you may delete all files in "data/database/default" and
     the "docs" directory if you wish.