A couple of years back we prepared a customized framework for a customer under V405 firmware version. Since the new meters with new firmware arrived to the customer, they were unable to use the customized framework in the new meters because the meter stays without "enough processing power". We downgraded the new meters to the old firmware we used to develop the customized framework (V405) and they work ok with the customized framework (real time, calculus, data recordings and almost everything is ok) BUT they shown nothing on each display configured in the meters, just empty displays and some horizontal lines are shown. We tried to update the framework for the actual firmwares (that seems to be more intensive) but the meter stays always without enough processing power to complete all the required tasks for the customized framework (even for firmwares 4.07 and up). Any help please?.