My first advice would be to rename the ZIP file to something more manageable. Sometimes dots and dashes are interpreted as arguments or file extensions.Thanks to all the contributors so far.
I installed the new recovery no problem. When I boot into recovery from bootloader menu and try to sideload the zip file, I get nothing other than, in Terminal, the adb command help listings, like I typed in the wrong command. Here is what I input
adb sideload 149e0c34d0ab10d3e356d6301915dcc04552d9db.signed-lenok-LWX48P-from-KNX01R.149e0c34.zip
I can type 'adb devices' and my device is listed, but for some reason I am having a problem with the sideload command. Any advice?