Method for changing data charged in memory cells of an electronic franking machine

for determining the validity of the program to be loaded; and c) altering data in the postage meter in the validity of the loaded program checked by means of authentication and plausibility of the data or leaving the interpreter routine of the postage meter if the data is invalid and steps to prevent another Program execution for manipulation or one of the OTP processor to externally leading program branching. The performed interpreter routine consists of two parts, after which a prologue is processed after the first comparison and then an epilogue is called, and then steps a) to c) are repeated. if the data is invalid and steps to prevent further program execution for tampering or program branching external to the OTP processor. The performed interpreter routine consists of two parts, after which a prologue is processed after the first comparison and then an epilogue is called, and then steps a) to c) are repeated. if the data is invalid and steps to prevent further program execution for tampering or program branching external to the OTP processor. The performed interpreter routine consists of two parts, after which a prologue is processed after the first comparison and then an epilogue is called, and then steps a) to c) are repeated.