Oppo have announced that they have closed the download for the Oppo Find 5 Beta Firmware update (X9909EN_13_130627_BETA) due to serious signal loss issues.
Yesterday afternoon Oppo placed links and instructions to download a beta firmware update for the popular Oppo Find 5 phone. The update featured a number of improvements and bug fixes including issues with the notification bar, lock screen, 1080 icons plus optimisations for certain languages.
The update being a beta was likely to have a few rough edges, however several Find 5 users (Ofans) have experienced serious signal issues to the point that Oppo have actually removed the download links and closed the OTA update.
Oppo are currently working on a fix and hope to launch an update fixing the issue as soon as possible.[ Source ]