Hola !
Essaye d'aller dans la page diagnostic : Appuie sur les 2 touches curseur (< et >) en allumant la bête !
You may need to reinitialise the Ultra if it locks up or crashes. To re-initialilise and ERASE all user preset data, select Diagnostic 16 and press enter. Kapow ! You will now need to reload RAM with your presets and the E-mu factory presets.