screen resolution issues

[StewDapples]

Hi I am relative newbie and have got myself stuck.

I changed the resolution to default from retropie setup and now nothing will display on my tv.

I have tried logging in to the pi using mobixterm and SSH
using pi as a user and raspberry as the password to edit the config.txt file in the boot menu for safe mode hdmi.

the problem is i am getting access denied when trying to upload the edited config file.

can anyone please help?!

[windg]

@StewDapples
Try to modify the file, without download/upload anything, from the terminal window with this command :

sudo nano /boot/config.txt

After you edit it, press ctrl+o to save the change and ctrl+x to exit.

Also, you can edit this file from a windows machine, because boot partition is readable (fat32).

[StewDapples]

@windg

That worked perfectly, thank you!