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打破苹果铁律!iOS 18 直接降回 iOS 14?没 SHSH 也行?大神这波操作看傻了

  • 2026-08-10 06:23:12
打破苹果铁律!iOS 18 直接降回 iOS 14?没 SHSH 也行?大神这波操作看傻了

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这瓜有点硬核，但吃着很香啊！🔥


简单来说就是：有大神把 iPhone XR 上的 iOS 18，“硬塞”回了四年前的 iOS 14，而且还没用 SHSH！

事情是这样的，开发者 @pwnerblu 最近发了个视频，直接把一台跑着 iOS 18 的 iPhone XR，有线引导（Tethered）降级到了 iOS 14.0 beta 4。


最骚的操作在于：他根本没保存 SHSH 备份。

这在以前简直是天方夜谭。咱们都知道，苹果锁死降级靠的就是 SHSH 这把“钥匙”，没钥匙想回旧版本？门都没有。

但这次不仅进去了，还能正常进系统，属实是把苹果的规矩踩碎了

背后的“黑科技”：usbliter8 漏洞

这波操作的命门，是一个叫 usbliter8 的硬件级漏洞。

- 它是 A12/A13 芯片（XR、XS 系列）底层的 USB 控制链漏洞。

- 苹果就算更新系统也修不了，因为这是硬件层面的问题。

- 现在开发者是用开发板配合这个漏洞，强行修改 USB 底层数据来引导开机。

⚠️ 别急着欢呼，泼盆冷水

虽然看着很爽，但目前还是 “半成品” 阶段：

1. Tethered 启动：意思是手机不能断电/重启，断了就得重新插电脑引导，离真正的“无拘无束”还差一步。

2. 没有 ETA：作者明确说了“别催，不公开”，工具短期内出不来。

3. 稳定性存疑：目前更多是技术验证，能不能日常用、支不支持其他机型，都是未知数。

一句话总结

这是一次非常牛逼的 “技术越狱”，证明了不用 SHSH 也能跨大版本降级的可能性。

但对于咱们普通用户来说，坐稳扶好，继续观望就好，别急着拆手机！ 😂

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  139. /yingpanguazai/ssd/ssd1/www/c.mffb.com.cn/runtime/temp/cefbf809ba1a84190cb04b0cb7abcf79.php ( 11.98 KB )
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  1. CONNECT:[ UseTime:0.001126s ] mysql:host=127.0.0.1;port=3306;dbname=c_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001661s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000724s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000679s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001446s ]
  6. SELECT * FROM `set` [ RunTime:0.000642s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001539s ]
  8. SELECT * FROM `article` WHERE `id` = 499209 LIMIT 1 [ RunTime:0.001028s ]
  9. UPDATE `article` SET `lasttime` = 1787556629 WHERE `id` = 499209 [ RunTime:0.003084s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000587s ]
  11. SELECT * FROM `article` WHERE `id` < 499209 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001186s ]
  12. SELECT * FROM `article` WHERE `id` > 499209 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001215s ]
  13. SELECT * FROM `article` WHERE `id` < 499209 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.015287s ]
  14. SELECT * FROM `article` WHERE `id` < 499209 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002019s ]
  15. SELECT * FROM `article` WHERE `id` < 499209 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002175s ]
0.195850s