Failed to install platform: 'arduino:renesas_uno:1.5.1'

Uno R4 Wifi (already stuck, and don't actually understand what the steps I'm taking are supposed to do). I think this stage loads firmware onto the Arduino processor, and software comes next. But it "times out" before the file in the topic name has loaded. Another post (here) described editing a file called, "C:\Users\David-PC.arduinoIDE\arduino-cli.yaml" (where my PC's name is David-PC). I found it, opened it in Notepad and added the recommended line to lengthen the connection timeout (I used 600 sec). But it said I don't have authority to save this edited version. (I'm the only user, and Anti-virus was paused). What's next? (and feel free to assume I know nothing, because I truly don't).

Welcome to the forum

Did you close all instances of the IDE before editing and saving the file ?

I did close the IDE, but I couldn't save the (edited) file with the extended 'time-out'. Before contacting the community I put everything away. When I saw your reply (and to be doubly sure) I re-started the computer, repeated the download and opened the second file (same size). This time, upon repeating the steps for getting the Uno R4 bundle (with R4 WiFi among them), it didn't time out! It completed the load, and I did the next step, (opening and adjusting the "Blink" example).

There might be no answer other than a corruption in the first download, but my ability to make clueless mistakes is restored.

Guys i'm trying to connect mi own wifi (Mobile's connection) to mi R4 wifi, but i can't connect, it shows a message that says:
Platform 'arduino:renesas_uno' not found: platform not installed
Compilation error: Platform 'arduino:renesas_uno' not found: platform not installed
Do someone nknow what is it?? (I'm very new on this)

Hi @viroroth22. Support for specific Arduino boards is added to to Arduino IDE by installing an additional piece of software called a "platform". You must install the "Arduino UNO R4 Boards" platform in Arduino IDE in order to use it with the UNO R4 WiFi. The error you encountered indicates you have not installed that platform.

I'll provide instructions you can follow to install the platform:

  1. Select Tools > Board > Boards Manager... from the Arduino IDE menus to open the "Boards Manager" view in the left side panel.
  2. Find the "Arduino UNO R4 Boards" entry in the list of boards platforms.
  3. Click the "INSTALL" button at the bottom of the entry.
  4. Wait for the installation process to finish, as indicated by a notification at the bottom right corner of the Arduino IDE window:

    Successfully installed platform ...

After doing that, try compiling or uploading your sketch to the UNO R4 WiFi again, just as you did before when you encountered the error. Hopefully this time everything will work as expected.

Ok, thanks, that makes sense actually. I'm gona try it, i hope it works correctly!