Is that an i7 A1286? I am not getting anything for A1268.
If so, that has a 2.5'' SATA 3 drive so can be swapped for any 2.5'' SATA SSD, I'd recommend a Crucial MX500 unless you can get the same capacity for similar price with a Samsung. Do you have another Mac that you can use to make the installer USB?
Personally I would go for Mojave, it does support Catalina but I have heard reports of a lot of issues with that version!
I made a typo with the model number mate, your correct its a A1286 my mistake
Unfortunately, no other mac here, just Win10 & Linux Mint, so im hoping to convert a DMG to an ISO & then put it on a USB stick somehow. NB>> I have grabbed "macOS Mojave 10.14.1 and MAC OS latest UTILITIES. November 6, 2018" from the usual places.
Im guessing thats everything i need.
Does the capacity of the SSD have to remain the same as the original, as ill never fill a 500gb so may as well go smaller.
Replaced the Drive & also found the Sata cable was also playing up so replaced that also. Downloaded Mojave from the usual places, wrote to USB stick only to find it was really Mountain lion ffs.
Now Downloading another "Mojave" pack ready for retry.
Can i manually add the Bluetooth driver to Mojave & is it possible to save the driver from Mountain lion & then add it back into Mojave after ?
Just the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown.