There are 2 paths: 1. Connect it, allow it to update, disconnect it. If any local “ads” pop up, do a factory reset which will wipe all the cached data. 2. Mos

There are 2 paths: 1. Connect it, allow it to update, disconnect it. If any local “ads” pop up, do a factory reset which will wipe all the cached data. 2. Most devices allow you to update firmware from a file via USB. Just get the file which is only the firmware and update that way.