If you still need the firmware file for archival purposes or specialized use, you can find direct download links to Apple's official servers on community-maintained sites: IPSW Downloads (ipsw.me)
, please note that Apple stopped signing this specific version on March 31, 2020. This means you can no longer officially restore or downgrade your device to iOS 13.3.1 using iTunes or Finder.
: Provides a direct link to the iOS 13.3.1 IPSW file for the Go to product viewer dialog for this item.
For users seeking to download for the iPhone 6s (Model iPhone8,1)
masih error bos
Maaf baru respon, error-nya dimana mas Mark ?
Mas aku udh instal dan ada di device manager.. Tapi pas mau upload program di CV avr kok tetep gk bisa yaa?
Nomor com udah bener mas ?