iPhone ipsw firmware download that provided by Apple, when you do the relevant operation at your own risk.
A3081 / A3082 / A3286 / A3287 / A3288 / A3289 / A3290 / A3291
22B91 · iPhone17,3
22B91 · iPhone17,4
22B83 · iPhone17,3
22B83 · iPhone17,4
22A3370 · iPhone17,3
22A3370 · iPhone17,4
22A3354 · iPhone17,3
22A3354 · iPhone17,4