Yes, the play store has the stock Manager that is compatible with XIM4s being shipped out today. The latest build is 20160104, it was released last week. You mentioned updating your firmware to the last version and the error your posted is what you can see if you attempt to run a firmware and Manager that are not compatible with each other.
After you have followed the steps listed above up to step 4, using your phone download the apk file listed in the thread above. Open that file when the download is finished. If you aren't prompted then go to your phone download folder and open the apk there. Once installed proceed to the next step on the list above.