Upgrading will not do anything, but you are in luck as I have repaired 6 consoles in the last two days. Here you go http://psx-scene.com/forums/f6/working-way...p-script-73780/
it isn't the suggested way to do this yet but it is the only way to repair it really. You may luck up and be able to replace the dev_3 folder with a model the same as yours and they can be found on that site as well but out of 8 I have tried only one actually worked. The above method has been 100% effective if you read and can recall the newest bluray you played last. They are working on a easier way but till then this leaked way from a tester (now banned lol) is the only fix.