I need to upgrade a Mics Rel1 T1 to a Mics 6.1 XC. I called our distributor to order the USA Mics-XC upgrade tool and the Mics 6.1 XC software.They told me that they would rather not sell me the upgrade tool because it is unreliable and hardly ever works. Is this true? Would I be better off using a RAD With NRU to restore the programming? Thanks in advance for your reply.