Apple and various manufactures have confirmed that there is a problem with how iOS 8.3 (released a few days ago) handles GPS data feeds from Bluetooth devices. These include the Dual XGPS 150/160/170 (ADS-B + GPS) receivers, the Bad Elf GPS, and the Garmin GLO GPS.
This is not a problem with FlyQ EFB, per se, as all apps that use standard iOS methods to get your current location via a Bluetooth receiver are affected. This includes built-in apps such as Apple Maps. A similar problem came up with several past iOS releases including iOS 6.x and 7.1. Apple has noted that they’re aware of the problem and have put a high priority on fixing it but have not announced a specific timeframe.
Until Apple fixes the issue, pilots can get around the problem either by using the iPad’s internal GPS (cellular-enabled iPads only) or by using a Wi-Fi based ADS-B + GPS systems as the issue is strictly limited to Bluetooth; Wi-Fi systems are not affected.
The following URL has a method for downgrading your iOS from 8.3 back to 8.2. I have not tried it myself and cannot verify it but I’ve seen a few posts from people who have said it worked for them. Caveat emptor. We have not received any further news from Apple (nor did we expect to).