How can I downgrade to Firmware V 3.12

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Jul 21, 2013
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After installing the ZenMuse and PMU on the Phantom I upgraded to 3.14.
Big mistake. It sends the Phantom into a warm up loop ( 4 yellow flashes) which goes on forever and I can not
fly the craft.
In the manual it states that if the warm up lasts longer than 2 minutes to go into advanced calibration.
Did that and it makes no difference. Clearly a software bug.
When I downgrade to 3.0 via the backdoor process I can fly the phantom. The Zenmuse and GPS access via the PMU V2 dont work
under 3.0.
I see some people have downgraded to 3.12. That would give me access to GPS and Zenmuse.

How can I downgrade to 3.12 ???? Help would be much appreciated.
 

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