The application you have selected is not a valid copy of macOS Mojave.

[Wingnut]

I have a iMac early 2009, 9,1 with 10.6.8 OS. Every time I try to install macOS Mojave Patcher downloaded from dosDude i get the above message. I have tried different versions of the patcher with the same results. Any help would be appreciated. I have also used the search feature with no success.

 

[dickie001x]

Sounds like you're selecting the patcher instead of the macOS download. It's still available from Apple - get it here (step 4): https://support.apple.com/en-gb/HT210190

 

[Wingnut]

I downloaded macOS Mojave Patcher.dmg from dosdude's website. When I try to open it I get this message "The application you have selected is not a valid copy of macOS Mojave". I cannot get Mojave from the apple site as this iMac was produced before 2012. Thanks for the reply.

 

[dickie001x]

Open the patcher, then select Tools>Download macOS Mojave. Then use that.

 

[Wingnut]

Open the patcher, then select Tools>Download macOS Mojave. Then use that.

The patcher won't open, just get the above message.

 

[dickie001x]

I'm a bit confused by the message you are getting. Try this - download the macOS Mojave Patcher application and drag to your desktop. Open it. You should get this:

Then select Tools and download the macOS installer - you should get this:

If you are getting this then you are selecting the patcher app itself, and NOT the macOS installer (that you need to download via Tools in the menubar):

 

[Wingnut]

Success! I got it downloaded. Thank you for your patience. I think the problem on this end is a vintage brain and vintage machine.

 

[dickie001x]

Pleasure!

 

[Noob2006]

I'm a bit confused by the message you are getting. Try this - download the macOS Mojave Patcher application and drag to your desktop. Open it. You should get this:
View attachment 967764

Then select Tools and download the macOS installer - you should get this:

View attachment 967765

If you are getting this then you are selecting the patcher app itself, and NOT the macOS installer (that you need to download via Tools in the menubar):

View attachment 967766

Ok so I can get here, but then I get this message: Could not locate the correct entry in the CatalogURL

What can I do?