{"action":"created","issue":{"url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/1718","labels_url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/1718/labels{/name}","comments_url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/1718/comments","events_url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/1718/events","html_url":"https://github.com/mavlink/qgroundcontrol/issues/1718","id":95112542,"number":1718,"title":"Firmware upgrade sync error","user":{"login":"AndreasAntener","id":5750020,"avatar_url":"https://avatars.githubusercontent.com/u/5750020?v=3","gravatar_id":"","url":"https://api.github.com/users/AndreasAntener","html_url":"https://github.com/AndreasAntener","followers_url":"https://api.github.com/users/AndreasAntener/followers","following_url":"https://api.github.com/users/AndreasAntener/following{/other_user}","gists_url":"https://api.github.com/users/AndreasAntener/gists{/gist_id}","starred_url":"https://api.github.com/users/AndreasAntener/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AndreasAntener/subscriptions","organizations_url":"https://api.github.com/users/AndreasAntener/orgs","repos_url":"https://api.github.com/users/AndreasAntener/repos","events_url":"https://api.github.com/users/AndreasAntener/events{/privacy}","received_events_url":"https://api.github.com/users/AndreasAntener/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":26,"created_at":"2015-07-15T05:46:39Z","updated_at":"2015-07-27T17:35:47Z","closed_at":null,"body":"With master from just now, I get the following error on the firmware upgrade:\r\n```\r\nPlug in your device via USB to start firmware upgrade\r\nFound device: Pixhawk\r\nError: Sync: Send Command: Invalid sync response: 0x21 0x20\r\nUpgrade cancelled\r\n```"},"comment":{"url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/comments/125282316","html_url":"https://github.com/mavlink/qgroundcontrol/issues/1718#issuecomment-125282316","issue_url":"https://api.github.com/repos/mavlink/qgroundcontrol/issues/1718","id":125282316,"user":{"login":"DonLakeFlyer","id":5876851,"avatar_url":"https://avatars.githubusercontent.com/u/5876851?v=3","gravatar_id":"","url":"https://api.github.com/users/DonLakeFlyer","html_url":"https://github.com/DonLakeFlyer","followers_url":"https://api.github.com/users/DonLakeFlyer/followers","following_url":"https://api.github.com/users/DonLakeFlyer/following{/other_user}","gists_url":"https://api.github.com/users/DonLakeFlyer/gists{/gist_id}","starred_url":"https://api.github.com/users/DonLakeFlyer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DonLakeFlyer/subscriptions","organizations_url":"https://api.github.com/users/DonLakeFlyer/orgs","repos_url":"https://api.github.com/users/DonLakeFlyer/repos","events_url":"https://api.github.com/users/DonLakeFlyer/events{/privacy}","received_events_url":"https://api.github.com/users/DonLakeFlyer/received_events","type":"User","site_admin":false},"created_at":"2015-07-27T17:35:47Z","updated_at":"2015-07-27T17:35:47Z","body":"Crap! When you are using the firmware uploader does it catch the bootloader on first try or is it having to send the reboot command? Try this:\r\n- unplug board\r\n- make px4fmu-v2_default upload\r\n- plug in board\r\n\r\nDoes is start flash right away on bootloader according to leds? Or does it have to send the reboot command. I think in that case it shows some more text above having to wait."}}