Currently Being ModeratedNov 26, 2012 10:56 AM (in response to CIAGP)
The easiest thing to ry first is to have your friend phone the Apple Store (1-800-MY-APPLE) and ask for and operating system specialist, then tell them he's looking for replacement system disks. If he gives the representative the serial number of the computer, they can see if that version for his serial number is still in stock. If so, there is a charge of about US$16 per disk, but it may be the only way to insure your have the proper AHT version.
I've had a terrible time with the AHT downloads.iMac 27-in; Mid 2010 2.93G i7 Quad, Mac OS X (10.6.8), 4GB RAM; ATI5750 1G VRAM