Ender 3 V2 Neo firmware issue and now bricked

Ender Series Creality Ender-3 V2
1

Hey guys,

I have a Ender 3 V2 Neo which has a 4.2.2 motherboard and a knob screen that was displaying V1.1.6

I attempted to update the firmware for both using the latest files on creality website but neither worked and the display now just shows the creality screen.
I purchased a Nebula Pad and have tried to install the firmware from both the USB and website on that however it shows the motherboard abnormality screen and wont proceed any further.

Can someone please help me unbrick my ender or tell me which files i need and how to flash both the motherboard and display ?

Yes i used a 8gb card and formatted it to 4096b and had only the firmware file on it.

2

UPDATE:
Finally got my machine with the original knob screen working again and back to V1.1.6.
For some reason when i try and install V1.1.8 it has a error saying the private folder is larger than 1mb and wont allow it to update.

So now to try the Nebula pad.
Does anyone have any working instructions for this ?
Should i use the firmware that came on the USB or the latest of the creality site ?
Also does it matter which usb slot on the nebula pad i put the USB in ?