Fix broken ignition trim and ConnectionService

[synman]

Context

TODO comments indicate broken functionality in ignition trim and ConnectionService.

TODOs

1. MainActivity.java:881 — ignition trim is broken
2. ConnectionService.java:504 — ConnectionService issue
3. ConnectionService.java:803 — ConnectionService issue
4. ConnectionService.java:807 — ConnectionService issue

Related

• FTDI Support #7 (FTDI) — may be related to ConnectionService issues
• Response discarded for vendor/device ids 0x4348, 0x5523 #6 (Response discarded) — may be related to ConnectionService issues

References

• MainActivity.java:881
• ConnectionService.java:504
• ConnectionService.java:803
• ConnectionService.java:807

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Created from workspace-wide TODO audit.