Is it going to be possible to do the upgrade that is coming out this morning using Koush's recovery?
Just speculation, but I would say no. Looking at P3's screen shot, there is an updated Kernel and baseband.
From what I have read about Koush's recovery, it can not update the Kernal and probably not the base band.
Again pure speculation, but my guess is P3's 2.2 update is either doing a manual OTA Update, or using SBF to flash the ROM.
Using root explorer
Ok. Navigate to the system /bin folder. You will see three files that you need to mess with
(whatever date you installed it) size
Delete this file completely.
then find this.....
(whatever date you installed it) rwxrwxrwx -> hijack
( so remove the permission,any one,from this file or you can rename it to something else or move it somewhere else. Just so the system doesnt touch this file.)(dont go back to messing with it)
then find this file.
19 aug blah blah rwxr-xr-x (remove the .bin from this file)(and i added the permissions to be similiar to the before mentioned logwrapper file.)
then leave out of root explorer.
reboot your phone into stock recovery and apply update.zip which you should already have on your phone's sdcard.