i have tried it on different frequencies and different serial numbers. i have successfully restored the error codes on the following models: CFT2254/0/700/R2/T, Cft2200/0/800/R2/I2, CFT2214-0-800-R1-I2 (CFT2254/0/800/R2/I2), CFT2254/JAA/700/R1/SP, CFT2214-0-800-R2-I2, CFT-2254-M10-800-R2-I2, CFT2254-0-800-R2-I2, CFT2014/V5, CFT2024/V5, CFT2200/0/706, and CFT2254-HAA-800-R2-I2. All are working well with 02 signal and EA is gone.