[Ned]

Hello, I wonder if somebody could help me please.
I've searched on here but don't understand the answer.

I want to manually install the 4.15.12920 firmware on my new Aura H2O version 2 and have downloaded the firmware.
I got a folder called Kobo Update 4 with two files and another folder inside it.
The files are called Koboroot.tgz and manifest.md5sum and the folder is called Upgrade with another folder inside that containing some more files.

The instruction I can find says Unpack the zipfile containing the firmware update in the .kobo folder. I can find the .kobo folder on my kobo, but don't understand what to do next - there isn't a zip file and what about all the other files?

Edit: Sorry, I just found the answer.
Apparently there isn't a zip file at all, it's just referring to the stuff in the folder. I put the two files and folder into .kobo and it updated itself when I ejected it.