Just managed to recover from this error...
For anyone having trouble with the first method: I tried four times with a 16GB microsd card to no avail. Switched to a 4GB, formated to FAT32, and followed the guide, flashing the image for the definitive edition. Look and behold... it worked.
TL;DR: Try switching to a small microsd and try again.
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.