[destinedjagold]

Originally Posted by Sazen

Input checksum failed.

It means that the patch and the ROM are not compatible.
Note that there are different versions of a Ruby ROM.
Try and download the ROM from other sources.
And be mindful of viruses and other nasty stuff lying around in the internet.

Originally Posted by Sazen

how do I continue from the prev version's sav file?

rename the ROM the same as your .sav file.
Example, hello.sav, rename your ROM to hello.gba