Help needed with original software for my Asus TF201

Hi, I need your help. I have an Asus Transformer Prime TF201 and days ago it was very slow so I decided to do a factory restore. The problem is that it was rooted and I didn't know it. As you can see I am not a expert on that so I gave it to a guy who has a lot of experience... he only can install Cyanogenmod 9 and now the camera doesn't work. According to the technician I need the original software form any Asus TF201 because when I did the factory restore he does't know why some drivers where lost... Please if someone has the original software I will be very happy if you can pass them or indicate me where i can get it.. Thanks my friends...