Pandora monitor no more available in screen configuration

Hello

I have been running RiscOS Open sucesfully on my Pandora… until I get the very bad idea to play with resolution… Since then, I am stuck to 640*480 instead of 800×480 and the “Pandora” entry has disappeared from the list “Display settings > Monitor Type” :(
Note that the file Pandora does still exist in the folder !Boot/Resources/Configure/Monitors/Pandora/
In this folder, I have also the following files:Acer-X223HQ, ChipSee and OmapMDF for which I can see entries in “Display settings > Monitor Type”

How can I get the entry Pandora back?

Thank you for your help.

François

You can also use the Chipsee Display MDF. It works. I will upload the Pandora MDF if I back at home.

Edit: I forget… Is all inside the Merge_Boot.zip in the Download of my old WEB Seite . I have remove the old pandorakey and so on.