New Sonoff RF Bridge Board - Need Flashing Help

Hello dear team, I may need your help with a situation that I see got solved above, How did you manage to Flash tasmota on a Sonoff RF BridgeR2 – ESP8285 ( Board Version: R2 v2.2) ( Board date: 2021.01.19). After I connect the board to a windows machine and try to use this link: Install Tasmota or tasmotizer-1.2.exe I am receiving this error message: “failed to connect to esp8266 timed out waiting for packet header” I have tried pressing the “Pairing button” for 3/6/10 secconds while inserting the Prolific USB-to-Serial (Driver version: 3.3.2.120 - Date: 2008.9.24) Thank you in advance for any suggestion that you may have.