Lost the manual for an unbranded universal remote that looks like this:



... and possibly the same as this one:



The only clue I found is the code AB08-0309 on the pcb. Perhaps made by 'China Anhui'?

Any idea what brands this would be listed under?

Unfortunately models such as the above are shipped by the box load from the far east and are likely to be badged with the importers/distributors¹ name who, almost invariably, are unlikely to offer any support. However...

If you look here (six rows down and 3 in from the left) you'll see an image of a remote similar to those above that suggest it may be a URC 22B type². With that in mind try these instructions.

I'm not saying they will work, but they are certainly worth a try.

1. It's not uncommon to have the same model of remote be supplied by a number of different importer/distributors; i.e. the same remote, but with different brand names.
2. If you do an image search on URC 22B you'll see they come in a variety of shapes and guises.