How to Pay $30 But Use Previously Downloaded Copy of Installer?

That may not be technically possible. With the DRM that comes from the Mac App Store, the installer may "belong" to the person who downloaded it. Even if you have legally paid for it, you may run into limitations based on the DRM authorization.

That is all a bit of speculation, of course. The simple answer is to download a new copy. Then she can install that copy on all of her machines.

I think the answer is you can't as the download is "signed" by your Appleid and will require verification when you run it (Of coulrse you could "lie" and give it your Appleid temporarily)

Note - do not run the installer as it self distructs (so take a copy!!)

Regards,

Shawn

Also as I understand it there will be a USB dongle with it on at some stage as well.

How this works with the Appeid I'm not sure but it may be worth investigating.

Regards,

Shawn

There are two options:

How to create an OS X 10.7 USB Install Drive

How to create an OS X 10.7 Install Disk

Shawn Grinter 2 wrote:

Also as I understand it there will be a USB dongle with it on at some stage as well.

That is supposed to happen in August.

How this works with the Appeid I'm not sure but it may be worth investigating.

Good point. No one knows those details yet.

Is it possible just to copy the .app file to another computer to do the upgrade? Thanks

BackupLion

http://www.eggfreckles.net/tech/burning-a-lion-boot-disc/

http://eggfreckles.net/tech/installing-lion-clean/

Check Apple's license details throughly before usingorinstalling Lion.

This is what binds you legally, notwhat users say or sites suggest you can do.

Yes

If you were to merely make a copy for a friend, this would violate the license agreement.

You can install it on multiple systems you own. Download it through the App store, go to your other computer, open the App Store, log in with your Apple ID and download Lion again without having to pay again.

As found at: http://www.apple.com/legal/itunes/us/terms.html#APPS

MAC APP STORE PRODUCT USAGE RULES

Except as otherwise set forth herein,

ℹ You may download and use an application from the Mac App Store (“Mac App Store Product”) for personal, non-commercial use on any Apple-branded products running Mac OS X (“Mac Computer”) that you own or control.

(ii) If you are a commercial enterprise or educational institution, you may download a Mac App Store Product for use by either (a) a single individual on each of the Mac Computer(s) used by that individual that you own or control or (b) multiple individuals on a single shared Mac Computer that you own or control. For example, a single employee may use a Mac App Store Product on both the employee’s desktop Mac Computer and laptop Mac Computer, or multiple students may serially use a Mac App Store Product on a single Mac Computer located at a resource center or library. For the sake of clarity, each Mac Computer used serially by multiple users requires a separate license.

(iii) Use may require sign-in with the Apple ID used to download the Mac App Store Product from the Mac App Store. Mac App Store Products can be updated through the Mac App Store only.

So based on the information provided within the license agreement for the Apple App Store, you can use this on your own systems. The link I posted earlier is merely how to back up your purchase to a DVD or USB drive, so you can have a copy to reinstall without having to download another 3.49 GB file.

If you looked at my first post, I tell you how you can use the original download to make Lion into it's own install disk, so you can use it on additional systems.

If you read the link I posted about how to create a 10.7 Install Disk your question is answered. There is no multiple downloading required. Once and done. If you cannot figure it out, you are welcome to wait until August when it will be available from Apple via USB Drive ... OR you could just follow the instructions I posted and install it on each family member's system.

It works, I've done it. I downloaded it to my Mac, used the instructions I posted, created an install disc on DVD and installed in on my MacBook Air.

The Lion license agreement allows you to install it on all your "family" Macs. Read it.

You do NOT have to download Lion on each computer. If you have it; install it. Read the license agreement: There are technical AND legal options you have here, and NONE of them require you to pay any money to Apple assuming you paid $29 (or whatever is local currency) for one computer in hour household and you're installing it on another computer in your household.

So the solution is simple: You're just not paying attention to the (correct) answers people are giving you.