title: Lost my keystore for uploaded app on android market
body: <p>I don't know how to solve my issue. 
  We published an android app on the Android market. After fixing a few issue, we are not able to release it as a next version of the app in marketplace because we have lost the private key used to sign that build. If the update version is not signed by same key, android is not accepting the build.</p>
  
  <p>For this application, few users have already purchased it on the market. If we upload the same application with different package name, purchased users will be unable to get the updated version. How can I solve the issue ? Any suggestions regarding this ?</p>
  
  <p>Thanks in advance...</p>