I have purchased and installed the 4.2.7 32-bit silent board for my Ender 5 (without the BL-TOUCH and no filament detector)
The Ender-3 firmware came installed on it, so according to the manufacturer indications, I downloaded the latest firmware version for the Ender-5 from https://www.creality.com/download which would be the file: "Ender-5,5S 4.2.7mainboard (32bit) .zip".
From this ZIP file I extracted the firmware (original) corresponding to my printer: "Ender-5- Marlin 2.0.1 - V1.0.1 - TMC2225.bin" (since I don't have the level sensor or the filament detector)
I copied it to a FAT32 formatted SD card and installed it in the printer. It initialized and loaded successfully. When I entered to check the printer configuration, it indicated: MARLIN 1.0.1 ENDER-5 dated 2020-04-25.
From there, I ran into these problems:
The extruder was inverted. I solved it by changing the connections on the motor connector (crossing 1 with 3 and 4 with 6)
The main problem now is that THE DISPLAY PERMANENTLY SWITCHES AND MAKES AN ANNOYING BEEP. This starts as soon as it start to heat the bed or start printing. I didn't find this problem documented anywhere.
In the original firmware that came with the Ender-5 (8-bit board v1.1.4) the FILAMENT CHANGE and MANUAL BED LEVELING functions were available. With this update I don't have those functions. Is there any firmware (.BIN file) with those functions available? They are essential to be able to use the printer normally.
I will be grateful if someone can help me solve these issues, because I cannot use the printer under these conditions.