google nexus one update rom/kernel

this is tutorial for update your google nexus one

for who want to use Gingerbread OTA update 2.3.3 now can be used

the way is download gingerbread ota from here

after that try to update using the recovery,
if an error appears like this
Verifying current system...
assert failed: apply_patch_check("/system/app/LatinImeGoogle.apk",
E:Error in /sdcard/update.zip
(Status 7) installation aborted