Supplemental to Issues being raised to developers with Feeder/Dump1090 thread here

Version 19-8 has option to compress and send diagnostic data to FR24 support via support@flightradar24.com for personal assistance.
You can download it either by opening URL in browser: http://RECEIVER_IP:8754/diagnostics_dump.tgz or by running:
sudo /usr/lib/fr24/dump_diagnostics.sh

Preemptive changes:
Replace config reference of 'localhost' to 127.0.0.1 when using TCP modes
Optional: Fixing dpkg installer in stuck state: sudo dpkg --configure -a

Manual commands:

Show current / local available version
apt-cache policy fr24feed
fr24feed --version


View service-start error log:
(Must be temporarily enabled in config or during setup)
cat /var/log/fr24feed/fr24feed.log

Show Dump1090-Mutability version if exists (If 'Unable to locate package' manual install is required)
apt-cache policy dump1090-mutability

Manual Install of included 1.14:
Code:
sudo /usr/lib/fr24/install_dump1090.sh
Check for existence of other dump1090
apt-cache policy dump1090

Show status of feeder
fr24feed-status

Feeder Satus
All above functions can cause either of the bellow errors when viewing status:

FR24Feed core component not running:
[FAIL] FR24 Feeder/Decoder Process ... failed!

FR24feed Core running. But secondary issue:
- Possible Ping rights
- Locked/in-use USB Issue
- Dump1090 didn't install with the script

[ ok ] FR24 Feeder/Decoder Process: running.
[ ok ] FR24 Stats Timestamp: 2018-01-24 09:15:30.
[ ok ] FR24 Link: connected [UDP].
[ ok ] FR24 Radar:
[ ok ] FR24 Tracked AC:.
[FAIL] Receiver: down ... failed!
[FAIL] FR24 MLAT: not running ... failed!


* Ensure localhost replaced with 127.0.0.1 If in config
** Re run USB blacklist command and reboot/check
Code:
sudo wget -O /etc/udev/rules.d/rtl-sdr.rules "https://raw.githubusercontent.com/osmocom/rtl-sdr/master/rtl-sdr.rules"