Have you have put the platfotm-tools folder at PATH when you installed adb?I'm trying to install the update following all the steps, but it won't work. Using powershell I type in adb devices and it recogizes the command. have put the update.zip in platform tools folder, I go to recovery and type in again adb devices and it says that the device is connected, then I type in adb sideload update.zip, and get this message "adb: failed to stat file update.zip. No such file or directory. Can someone help me get this setup, don't know what I'm doing wrong.
Make sure you have file extensions on. You might've renamed the file to update.zip.zip or update.zip.bin by mistake.