Question about PCM reflash according to bulletin S303-S139
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Question about PCM reflash according to bulletin S303-S139
In search of a solution to a malfunction with fuel trims, I came across this bulletin. I'm almost 100% sure that I don't have these updates installed. Early car L16649. The question is how to upgrade so as not to turn PCM into a brick. I have SDD / IDS and mongoose pro available. At the last connection, I offered to update the firmware of the control unit and gearbox, but I did not dare) Does anyone have experience with these ancient units?
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geekman
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
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11-28-2019 07:17 AM
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