These are two different repair methods:
PDF+IMG method, you need to erase the entire SD card to create a recovery SD card with the contents of the loader.
BIN way does not need to erase the contents of the SD card, but the need to use hex editor, I also explained that this is for advanced users, the average user can use PDF + IMG way, there have been many users use this method to repair their card.
If you have tried two methods, have not repaired your card, still shows NO LOADER FOUND, you may need to select the "test card" option inside the safe mode to see if there is an S71 error, if so, you can contact the dealer to replace or refer to my signature's repair guide.