A friend has a Uwatec Aladdin Air computer that needs to have the battery replaced ($120). While having the battery replaced can this computer be upgraded to properly calculate stats for Nitrox? Is there a BIOS or other software upgrade? It is about 7 or 8 years old. It is air integrated and I know it will report on the pressure correctly, but the other stats would be based on regular air not nitrox.
Any input would be great.