[Q] upgrading from Hyperdrive 7 to 8.1
Ok so I have a S4 and have been running Hyperdrive I started with 6 upgraded (clean) to 7 and am trying to upgrade to 8.1 I downloaded the rom on my PC connected to my phone (i have tried reinstalling the usb drivers when this didn't work the first time) it sees the phone I run the rom from my pc it says checking ADB mode then it reboots the phone and I get the usual downloading android symbol and then I get the checking for fastboot and it says fastboot is not enabled or not detected and I am stuck. in the install message about the fastboot it mentions the guide for configuring the USB drivers and I have looked for an hour here and can't find aything at all
I am using twrp and again its worked from 6 to 7 I am stuck from 7 to 8.1
I am not an idiot but I am not sure what is going on and have looked through and tried my best to sort this thing out, any help with success would be appreciate it.
just looked and I am running a baseband of I545vruamdk would this make a difference at all? even though its ME7 for rls8.1?