I don't think Windows knows how to open the .img (7-Zip does, if you have it installed). Try writing the image using Etcher or the Raspberry Pi imager, but without un-zipping it.

@rkuzyk hello, I think I can be of help... what program did you use to initially extract your RetroPie download? If you used winRAR, try again with winZIP instead.

WOW !!! Thanks a lot @mitu !! ;-)

This KROM X-Box usb gamepad is new, and I didn't know what you meant with X-Input or D-Input.
So I read in the manual and understood.
The problem was because when we just connect the gamepad on the RaspBerry Pi 4 (RetroPie) by default it always starts in X-input mode (PC X-Box) and to change to Direct-input mode we just have to press and hold the home button for about 5 seconds.
Then RetroPie recognized the control normally and it was possible to configure it.

Thank you so much!!!

That being said, you should try one of the other MAME emulators - Mame2003 has mouse support and RetroArch seems to detect your mouse. As a plus, it supports absolute pointing devices.

And here is a hint for the controller, the controller 8bitdo SN30 Pro G Classic Gamepad must be connected to Xinput via Bluetooth or it won't work:

Mode:
Hold Y+START button POWER ON as SWITCH PRO mode.
Hold A+START button POWER ON as MAC mode.
Hold B+START button POWER ON as Android mode.
Hold X+START button POWER ON as Xinput mode.

A. LED 1 blinking: D-input mode
B. LED 2 blinking: X-input mode (Xbox 360 mode)
C. LED 3 blinking: macOS mode
D. LED Rotating: Switch mode or pairing mode

Please add more info about your system, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first.

@cbr_greg Please re-install from the Pi4 image provided in retropie.org.uk/download. If you want to use the desktop, then you can install it as indicated in the Docs.
Before attempting to overclock, just run the games you're interested in and see if you really need to overclock.

@mitu thanks I used a different mode on the controller and it connected

@BuZz - Ah, thanks a bunch, that makes perfect sense. I usually use Chrome and when I open my browser I go to the history and reopen several tabs at once. RetroPie is one of the main sites I visit and I usually have multiple topics open for reading and reference. I'll be sure to keep it down to a few tabs.

Ok. Nevermind i have managed to fix this issue by formatting the SD card and flashing the image again.

Thanks a lot.

By the way. Is there any work around, I am thinking of for example being able to point out a specific (older) version of a binary to install?
I guess this could be good also in the case when several clients happen to run not the latest version of a Ported game (multiplayer), and then a new client installs the game but runs into compatibility issues when joining the multiplayer game.

BR

The autostart.sh is located in /opt/retropie/configs/all/. It's started from /etc/profile.d.

I'm new to retropie, the PI4 was sleeping nearly a year until I guess I found a project where I want to use it. :-)
although well documented on the github it is not for raspberry pi, did anybody try to compile and build it as a selectable option in retropie based on a raspberry pi 4, suceeded and has a half-newbie howto for this? :-)

thank you!

@mitu said in How to edit autoconfig hotkeys?:

@foxtochop said in How to edit autoconfig hotkeys?:

Is there going to be any problem in the future for me by binding state slot -/+ to "99"? (Any of my controllers have a "99" button).

No likely, since updates will not overwrite the file you modified.
As an alternative solution, you can disable the joypad auto-configuration performed by EmulationStation and modify your gamepad auto-config profile in /opt/retropie/configs/all/retroarch-joypads to set your own hotkeys.

Alright, thanks!

@dankcushions Thanks for the response. I have aspect ratio index set to 23. It was working fine with my Pi 3B+ before I upgraded/updated. Seems like there should just be a retroarch switch I can pull to go to custom scaling.

thanks again Mitu, didn't even know there was one, will try again. Thanks for helping with my issues.

[libretro ERROR] Error opening file: /home/thorsten/RetroPie/roms/psx/Destruction Derby Raw (Europe) (En,Fr,De,Es,It)/Destruction Derby Raw (Europe) (En,Fr,De,Es,It) (Track 01).bin No such file or directory

it sounds to me like the .cue is bad and points to a file that doesn't exist. you could either acquire a different rip or attempt to create a new .cue (see https://retropie.org.uk/docs/Playstation-1/#bin-only-roms)

@mitu perfect. Keep being awesome

Normally the Pi should switch to composite if the HDMI port is not connected, but you can force PAL by adding sdtv_mode=2 to the config.txt configuration file.
Assuming your composite cable is correct and you've switched the TV input to the RCA input, you should get an image.