It seems that the mediafire download link is broken. Is there any updated link where I can download the file? Thank you.

Just sharing my experience... I actually had the same problem in the past (booting Puppy Linux in 32bit UEFI on 64bit computer), but after installing Tahrpup and LxPupSC using Universal USB Installer in Windows, putting the bootia32.efi on /EFI/boot folder and creating a grub.cfg file in root direct...