4.2.1建議先別升級吧

[PAN206AI]

請問大大市怎麼降回4.1的呢?因為我昨天怎麼降都沒辦法降回4.1
下載4.1韌體回復也不能耶!爬文很久還是找不到答案

[randy0722]

消息來源怪怪的吧...
因為我已經刷了快10回了(升降各五次)

他說的是小雨傘這篇吧
UPDATE: Do not update to 4.2.1 for the baseband protection. TinyUmbrella is no longer able to kick you out of recovery for that version. TinyUmbrella still works for prior versions and will be able to restore and kick you out of recovery for those versions but 4.2.1 has a baseband version check that will stop your device from booting if your baseband was not updated.
但是我看他也搞不太清楚

[agnesb1219]

管理大大沒錯我說的就是這篇~~

[鹹魚爸]

iPad升到4.2.1真的超好用
有繁體中文藍芽鍵盤輸入
有Airplay聲音輸出到音響的支援

對一個多媒體機來說，真是很夠了
現用slingplayer/ Tvuplayer / apple TV
聲音可以輸出到音響，真的很讚！

能不能JB就在其次了，但iPhone4我就不能升
因為升了mywi就不能用了XD

[smallsau0529]

他說的是小雨傘這篇吧
UPDATE: Do not update to 4.2.1 for the baseband protection. TinyUmbrella is no longer able to kick you out of recovery for that version. TinyUmbrella still works for prior versions and will be able to restore and kick you out of recovery for those versions but 4.2.1 has a baseband version check that will stop your device from booting if your baseband was not updated.
但是我看他也搞不太清楚

我看的意思應該是 4.1 --> 4.2.1 一定要升級成新的baseband
不能像之前那樣，利用TinyUmbrella來保持舊的baseband升級韌體
似乎是新的4.2.1韌體裡有多加一個baseband的驗證機制

最大影響的就是使用鎖機的朋友

看來應該是不影響降級的部分

[HanseCH]

UPDATE: Do not update to 4.2.1 for the baseband protection. TinyUmbrella is no longer able to kick you out of recovery for that version. TinyUmbrella still works for prior versions and will be able to restore and kick you out of recovery for those versions but 4.2.1 has a baseband version check that will stop your device from booting if your baseband was not updated.

他沒有提到能不能降版阿，只是不能用老方法保留之前的Baseband

[randy0722]

對啊
所以我才說無鎖版沒差
是樓主誤解

[gn00709068]

昨天誤升4.2.1...但還是可以進入dfu模式降級︿︿

[white5938]

對啊
所以我才說無鎖版沒差
是樓主誤解

無鎖版沒差...
所以只要有備份SHSH~就可升級4.2.1...用不高興再降版囉!?
如果是這樣~我也要去升級試看看

[jack1214]

我升級到4.2.1後,後來又降回4.1版本,也是碰到1013錯誤
但用小紅傘一樣可以降級成功!!