Nexus one (Android 2.1升级Android2.2)

apply sdcaard:update.zip后出现如下问题：

E：Can't open /cache/recovery/command

--Install from sdcard...

Finding update package...

Opening update package...

Verifying update package...

Installing update...

assert failed:file_getprop("/system/build.prop"."ro.build.fingerprint") == "google/passion/passion/mahimahi:2.1-update1/ERE2//24178:user/release-kyes" || "ro.build.fingerprint") == "google/passion/passion/mahimahi:2.2/FRF50/38042:user/release-keys"

E:Error in /sdcard/update.zip

(status 7)

Installation aborted.

杯具得不行，根据找不到从ERD56C升级到FRF50或其它版本的包。。。。

ERD56C升级至ERE27:

http://forum.xda-developers.com/showthread.php?p=9518576

ERE27升级至ERF50:

http://www.android-hk.com/news/nexus-one-manually-update-android-2-2/