Unable to update

Hello.

Some time ago, I installed rom Finless 2.0

Now, I´m trying to install the official firmware, but I can't. I tried with SD card and USB. I tried update from settings, and with toothpick. I tried several firmware versions. I tried the PC tool (but I'm not sure if I choose the right file, or rom). And nothing.

I can't never get the initial screen with the options for updating.

I don't know what to do, if something is wrong, or if it´s the damned Finless, who wrote someting undeletable....

Unable to update