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Flashing a JTV69 back to 1.90 to use with a Vetta amp

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So I have a Vetta amp. I would like to flash my JTV 69 back to 1.90 (the last firmware with the old models in it) in the hopes that the Vetta be able to see/have more control of it like the original Variax's. Two questions, if anyone can answer.


Will my JTV69 be OK after reflashing back to 1.90? Since it's still available then I assume it will be but I just want to make sure.


Will my Vetta then be able to see/control it like an original Variax?

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