iOS 8 beta 2支持设备如下：
iOS 8 beta 2官方固件下载地址（全系列） iPhone5s 1533
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5s_model_a1453_a1533__12a4297e.zip iPhone5s 1530
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5s_model_a1457_a1518_a1528_a1530__12a4297e.zip ipad air 1474
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_air_model_a1474__12a4297e.zip ipad air1475
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_air_model_a1475__12a4297e.zip ipad air1476
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_air_model_a1476__12a4297e.zip ipad mini 1489
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_mini_model_a1489__12a4297e.zip ipad mini 1490
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_mini_model_a1490__12a4297e.zip ipad mini 1491
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_mini_model_a1491__12a4297e.zip iPhone5 1428
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5_model_a1428__12a4297e.zip iPhone5 1429
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5_model_a1429__12a4297e.zip iPhone4s
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_4s__12a4297e.zip iPhone5c 1532
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5c_model_a1456_a1532__12a4297e.zip iPhone5c 1529
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__iphone_5c_model_a1507_a1516_a1526_a1529__12a4297e.zip ipad2 wifi
http://adcdownload.apple.com//ios/ios_8_beta_2_mf5r7v/ios_8_beta_2__ipad_2_wifi__12a4297e.zip 推荐阅读 iOS 8 beta 2更新升级新功能介绍 新增来电归属地 iOS 8 beta 2固件升级包发布 可OTA升级或iOS开发中心下载 ios8测试版官方固件下载地址 iPhone/iPod touch/iPad可升级清单 iOS8 Beta测试版怎么升级？开发者版无需帐号升级教程 iOS 8 beta开发者预览版如何降级回到iOS7.1.1？教程解析 ios 8测试版有哪些未知的隐藏功能？新功能介绍 | 