[DEV] Froyo on Nexus One - building from google source

---

hi,
I have downloaded froyo source from google and trying to build and run it on nexus one (N1). N1 is untampered (locked bootloader/non-rooted/original recovery image).
I followed the build steps as given at google website with required modifications.
I got one build error about librpc.so needed by libgsp.so. Resolved it by building librpc.so mannually and then continuing the build.
OTA package was created successfully. But when I put the zip as update.zip on sdcard and try to update from recovery, I get signature verification failed error.

Exact error is:
-- Install from sdcard...
Finding update package...
Opening update package..
Verifying update package...
E:failed to verify whole-file signature
E:signature verification failed
Installation aborted

Anyone knows whats going wrong?
If I do the update process with zip provided by Google (signed-passion-ota-43546.cc653ee4.zip) then it works.

Is unlocking the bootloader is required if you want to use custom build image?

Does google use different key to sign its packages than the one available at (build/target/product/security/testkey.x509.pem) by any chance?

Your packages would either not be signed at all, or would be signed with test keys.
These test keys aren't accepted by the stock recovery environment on the N1.
You would need to root your N1, install a custom recovery, and sign the OTA zip with test keys for this to work.
There is no way to sign update packages with Google's private keys.

Thanks for superfast reply. Didnt expect it will be so fast.
My zip was signed. Problem seems to be the locked bootloader and private keys as you said.
I was a bit reluctant to root my N1. Guess i dont have any other option now

I have one doubt. If I install a custom recovery and then update using custom built update.zip, wont the recovery image get overwritten by the recovery image in the update package?

Originally Posted by virajk

I have one doubt. If I install a custom recovery and then update using custom built update.zip, wont the recovery image get overwritten by the recovery image in the update package?

I guess recovery folder from the OTA package should be removed and then the zip should be signed again and used.

Could also do the steps below that are from here:

23) In your terminal, type "rm /system/etc/install-recovery.sh" and hit Enter
24) In your terminal, type "rm /system/recovery-from-boot.p" and hit Enter

Or probably just what you said above.

built librpc.so by hand?

---

I am getting the same error you mentioned:

ld: warning: librpc.so, needed by out/target/product/passion/obj/lib/libgps.so, not found

You say you built it by hand -- can you provide more explicit instructions for doing this? Thanks.

-sbq

Give command "mm librpc" to build rpc alone. And then continue the make of full android. I had got this error while building cyanogen's source also.

can anyone help me ?
i got this error while building


http://pastebin.com/9dVJJA4y

If you are missing libgps or other files, that is because you did not run or completely finish the extract-files.sh script found in device/htc/passion
edit: alternatively you can use unzip-files script with a froyo update.zip