How to downgrade my firmware version after a "succesful" update?

Hello,

Many thanks for your reply. Yesterday I posted a topic about this problem with some more details. I hope this may help.

+"Since today my trackpad and keyboard doesn't response anymore. This problem started after I exit from sleep mode. Then I get a security form where I can enter my password, but I couldn't. So I restarted my macbook pro for about 5 times, removed my adapter and battery, but it doesn't work.+

+After that I went to iFactory and they said it is apparently because of my latest firmware update 1.5.1. But why does this happen a week after I installed this update? Anyway, he suggested me to downgrade my firmware version with a firmware restore CD. Well it sounded as an straightforward and easy solution until I read that the restoration CD doesn't work when the firmware update already has been applied correctly.+

+I have read some other topics about keyboard issues and some points are relevant for me:+

+I'm be able to use an external USB mouse and keyboard.+
+At system profile by USB, only my iSight, Bleutooth USB host controller and external USB devices are displayed.+
+The keyboard background light works properly+
+This problem happens all of a sudden without intervals or strange behavior.+
+Using Leopard (10.5.2) and Windows XP via bootcamp+

+I hope I can solve this problem really quick because I need my Macbook Pro badly for my study. Thanks in advance for studying my problem.+

Greetings,

Tim

Dear neuroanatomist,

Thanks for your reply!

I want you to know that the problem has been located. Today after a long search on the internet I found this topic:

http://discussions.apple.com/thread.jspa?threadID=1365569

I was a little bit skeptical about the solution but it sounded quite obvious too so I tried it by myself. The first time nothing happened, so I changed the paper a bit and then it suddenly worked. This was really a big surprise and didn't know what to think about it.

There is no doubt that this is unacceptable, so I'll go to the Machouse (sort of Genius Bar) tomorrow and show them this weird stuff. ****, my schoolmates will laugh at me for having a Macbook Pro with such an isseu.

As you said before, I tried the Apple extended Hardware Test, but it took ages, so I decided to quit. Nothing was found after all.

About your question: iFactory is just the name of an Apple Store here in Holland.

Again, thanks for your time and responses.

Greetz,

Tim

The solution can be found at this topic: http://discussions.apple.com/thread.jspa?threadID=1365569

ps: For the quick topic scanners. The solution above doesn't give any answers on the topic question. As stated earlier, this is as far as I know impossible.