SCSI scanners and Tiger

Hereafter is a report from Hervé who has successfully used Fotolook with his SCSI scanner while running OSX.4 Tiger.

Following your previous news to keep using "old" SCSI scanner while running Panther, and half a day of fight with the Tiger, I could successfully use Fotolook coupled to my SCSI scanner Agfa Duoscan T1200 while running Tiger!!
How to proceed:
- Recover extensions from 10.2.8 (see http://www.hardmac.com/niouzcontenu.php?date=2004-02-22#1619)
- 'display contents' of Tiger extensions, and replace them with Jaguar, but pay attention to keep Tiger 'info.plist' and 'version.plist'
-remove the following files:
/System/Library/Extensions.kextcache
/System/Library/Extensions.mkext
(they will be created after the next boot)
-repair authorization
That's it!
After rebooting, the system will inform you that it can not use one of the 2 modified extensions, but it does not matter since my scanner via the Adaptec CPI card is now recognized and works perfectly with Fotolook ;-)
when I will have more time, I will try to test other versions of the extension to avoid the annoying error message after booting.
it seems that apple has locked the use of the previous extensions via a procedure checking the version number: so all you have to do is to keep .plist and exchange the rest of the contents (SCSI jaguar).
It might be of interest for other Macusers.