Thanks for your reply! So I'm really new to this stuff and I don't wanna do something wrong. This is my config.txt:
#############################################################
# Boot loader configuration #
# This file can be modified to your needs #
#############################################################
# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
disable_overscan=1
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
# Sound output. Set to 0 or comment for autodetect, 1 for DVI, 2 to force HDMI.
#hdmi_drive=2
config_hdmi_boost=0
# force hdmi while the tv can take time before sending the signal on the hdmi output
#hdmi_force_hotplug=1 <--- comment here
hdmi_ignore_hotplug=1 #add line here
# uncomment for composite PAL
sdtv_mode=2 # <-- uncomment here
# uncomment for lirc-rpi
#dtoverlay=lirc-rpi
# enable fake-kms overlay
# possible alternatives are
# * vc4-kms-v3d
# * vc4-kms-v3d-pi4
dtoverlay=vc4-fkms-v3d
# allow only one framebuffer (the one marked 0, closest to the power input)
max_framebuffers=1
# allow 4k 60hz
# hdmi_enable_4kp60=1 # <--- here commented
# total amount of GPU memory
gpu_mem=448
###########################
# do not remove this line !
include recalbox-config.txt
# custom config
[all]
Could you point me where I have to make the edits? Thanks in advance!