cant compile i2cdev missing

So got the cat as a gift jan 2020, and installed and got the board up via usb, on the console I can see that there already are something installed, but no info/version number is given in the text flow. So what is on the board right now, and is there any meaning to compile the latest from github and overwrite it at the moment? Or should I load it with "WriteInstinct.ino" calibrate and then "Nybble.ino"? What is the additional benefits with adding a raspberry pi 3, and could you also use a raspberry pi 3 B+ ?

The FTDI USB Drivers are installed with Arduino IDE package, but have at least in my case to be installed manually by browsing for the "arduino.inf" for the two devices under windows. From, https://www.arduino.cc/en/Guide/ArduinoUno - Click on the Start Menu, and open up the Control Panel. - While in the Control Panel, navigate to System and Security. Next, click on System. Once the System window is up, open the Device Manager. - Look under Ports (COM & LPT). You should see an open port named "Arduino UNO (COMxx)". If there is no COM & LPT section, look under "Other Devices" for "Unknown Device". - Right click on the "Arduino UNO (COmxx)" port and choose the "Update Driver Software" option. - Next, choose the "Browse my computer for Driver software" option. - Finally, navigate to and select the driver file named "arduino.inf", located in the "Drivers" folder of the Arduino Software download (not the "FTDI USB Drivers" sub-directory). If you are using an old version of the IDE (1.0.3 or older), choose the Uno driver file named "Arduino UNO.inf" - Windows will finish up the driver installation from there. Installing the Arduino drivers under Windows XP, Win 7 https://www.arduino.cc/en/Guide/UnoDriversWindowsXP

Edit in: My mistake, see post underneath this for the correct solution to this problem. --- Using the instruction from https://www.brainy-bits.com/ir-remote-arduino/ to get the header file worked. That is moved away the “RobotIRremote” and put the https://github.com/z3t0/Arduino-IRremote there instead. Been a while since doing software so maybe I missed something in the instruction doc but with this done the Nybble code passes verify. Also a good link to change ownership on the Arduino IDE if using the install package which set "wrong" ownership" when installed on windows. https://www.faqforge.com/windows/take-ownership-of-a-file-or-folder-by-command-in-windows/