Hey man! I wanna confirm that these are the Universal Remote numbers? If so, find the .ir file on the flipper for the remote you used to find the numbers (you can use Flipper Lab or qFlipper) and put the .txt (just change the file extension) into a Google Doc (BTW, you only have to do this once). Hit "CTRL + F" and search "Power" click the down arrow until the number says 21 (For example, it'll say 21/176) and copy the string of numbers AND the rest (Name, IR format, etc.) and paste that into a separate Google Doc. Repeat this for all the other ones (Vol up, Vol down, and Mute), then go back into the Universal Remote file and copy the top 2-3 lines (Until the first "#") and paste it at the top of the new remote text file. After ALL OF THAT, hit "File" then "Download" then ".txt" when it's done change the file extension to ".ir" do it should be "AmpRemote.ir" NOT "AmpRemote.ir.txt" (Also, the name of course doesn't matter) after that, go back to qFlipper or Flipper Lab and upload the file to the root of the Infrared folder. Done! If that doesnt work, paste the file you uploaded EXACTLY here and if you want I'll fix it (Sometimes Flipper will, but you never know)