1. AndroidBust's Avatar
    I’m trying to create my own SD update package for the LG L34C, but I can’t get it to work.
    I’m using the signapk.jar to sign the file and a test key file that came with the signing tool.
    This is the command I used to sign my zip package:
    signapk –w publickey.x509[.pem]privatekey.pk8 input.zip output.zip

    I’m able to sign the package but then when I try to actually flash the phone in recovery mode it fails

    I attached a picture of the error displayed on the device. Here is the text:

    Verifying update package...
    E: footer is wrong
    E: signature verification failed
    Installation aborted.

    I can’t get past the signature verification. I am able to apply an SD update for the LG L40 on this phone without a problem and it looks like they are signed with the same test key. So, I can’t figure out why it’s not working? I think my error is when I signed it. I also used “auto-sign” which uses the signapk.jar utility.

    Any ideas?
    Attached Thumbnails Recovery SD Update Signature Verification Failure-l34c-sdupdate-error.jpg  
    08-01-2014 03:58 PM

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