白夜梧桐
刚刚从国外论坛上查到的 有人发现可以先降级到8.4.1 然后升9就可以解决卡屏了 我正在下载固件 但还不确定 后面有人留言说大部分出问题的都是老版本直升9的 供大家参考下
原帖：
Finally fixed it! You have to downgrade to 8.4.1. Outlined the steps below.
Step 1 - Backup your pictures! Even though you can't get to your phone and use it you should still be able to backup your pictures
Step 2 - Download IOS 8.4.1 for your iPhone or iPad from this site --> https://ipsw.me/8.4.1
The file was taking a while to download for my phone so I searched the filename on Google and downloaded from Mega.
Step 3 - Reboot phone into DFU mode - hold down power button and home button - when it reboots let go of power button - still hold home button
At this point it will ask you to connect your phone to iTunes - will have to connect phone to the computer.
Step 4 - Hold down the Option (Mac) or Shift (Windows) and and then click restore.
Step 5 - Browse to the 8.4.1 file you downloaded and select it. This should restore to the previous IOS version. Note: This will wipe phone.
Step 6 - Restore from backup. Hope that you backed up before attempting to update.
UPDATE : After installing 8.4.1 I was able to update to IOS9 with no issues. I was initially running IOS7 when I attempted to upgrade the first time. Hope this helps everyone out.
原帖：
Finally fixed it! You have to downgrade to 8.4.1. Outlined the steps below.
Step 1 - Backup your pictures! Even though you can't get to your phone and use it you should still be able to backup your pictures
Step 2 - Download IOS 8.4.1 for your iPhone or iPad from this site --> https://ipsw.me/8.4.1
The file was taking a while to download for my phone so I searched the filename on Google and downloaded from Mega.
Step 3 - Reboot phone into DFU mode - hold down power button and home button - when it reboots let go of power button - still hold home button
At this point it will ask you to connect your phone to iTunes - will have to connect phone to the computer.
Step 4 - Hold down the Option (Mac) or Shift (Windows) and and then click restore.
Step 5 - Browse to the 8.4.1 file you downloaded and select it. This should restore to the previous IOS version. Note: This will wipe phone.
Step 6 - Restore from backup. Hope that you backed up before attempting to update.
UPDATE : After installing 8.4.1 I was able to update to IOS9 with no issues. I was initially running IOS7 when I attempted to upgrade the first time. Hope this helps everyone out.
