Viper ultimate v 1.2.0.0 dosent update to newer firmware

hey, i have a Viper ultimate that i buyed 3-4 years ago and its still doing its thing , yestarday i had some issues with charging it and i saw that i had forgot to install the newest firmware for it that is 1.7.0.0 . i installed the executor and when i press “Update” it stays 2 seconds and after   it says update failed and i restarted my pc and still the same error… can someone help me? like i tried fresh installing the synapse and all and nothing… please help