Free, frequent updates, massive IPSW database. Cons: Windows only; no native macOS version.
The standard tool provided by Apple. It is the safest method but offers the least flexibility. Official support, free, ensures firmware integrity. iphone firmware flash tool
: General troubleshooting, official updates, and data security. How it works : You connect your iPhone to a PC or Mac, put it into Recovery Mode , and select "Restore". Free, frequent updates, massive IPSW database
Ensure your iPhone has at least 50% charge before starting. massive IPSW database. Cons: Windows only
The polished, paid alternative.