I am really not sure, I believe that it will work if you do this process again.
No Idea if this makes any difference but, pay close attention to the process at least until the sideloading of the update.
Do not let the device attempt to boot with this firmware mismatch as this may cause issues. (This is the only conclusion I can come to as this process does work)
If the device automatically reboots then press and hold volume up to enter recovery or volume down to enter download mode.
If manual reboot or powering on then press and hold volume up or down respectively then press power until the device starts and release power button to avoid a reset.