Hello,
You have to must write eeprom.You can use Blue flower soft for write eeprom file to geo-345.Here i give you a web add: i think you would be found all kinds of software of Mitsubishi Truim.
www.download.gsmstreet.ru
But there has litle bit problem with malfunction.You would be write eeprom file anyway otherwise it con't possible to solve this problem.There has another way for eeprom ic write,If you have ic programmer.You can easily write by it.
asib