firmware I flashed
Ender-3 pro 4.2.7 mainboard firmware (32 bit)
Ender-3Pro_HW4.2.7_SW2.0.9.03_SpritExt_H300
I even tried to flash firmware for the screen
(its this one here https://www.amazon.com/dp/B09292H22C?psc=1&ref=ppx_yo2ov_dt_b_product_details)
(I forgot the name for it it had jay'sUI on it)
I double checked the wiring and it seems fine?
i tired to flash this Ender3V2-427-BLTUBL-MPC-20221222.bin
and this is my screen
https://www.amazon.com/dp/B09292H22C?psc=1&ref=ppx_yo2ov_dt_b_product_details
edit- I re-read your comment, I just renamed the file to .bin