MHD Flash went bad PLEASE HELP!! SOLVED

RMJ335i · 11-23-2015, 12:12 AM

I was flashing my car back to stock and my computer crashed in the middle of it and now my car wont start and it wont read the ECU and says HW:FFFFFFFFFFFF....

Please help me if you have any idea what to do.

RMJ335i · 11-23-2015, 01:26 AM

Crisis averted!!

I was able to download the JB4 Backend Flash Bin File and flash it without having the ECU recognized. Car started up and is running fine.

This had me scared as $h*T for a moment. I even called AAA and right when they pulled up is when the flash completed and the car started.

joeinsd · 11-23-2015, 05:14 PM

Lol. Glad you're back on the road! I haven't done any flashing, but just got my jb4 this past weekend. Will be backend flashing soon after some reading up on it. Hoping it goes smoothly.

riveraab21 · 02-14-2017, 10:57 PM

Quote:

Originally Posted by RMJ335i

Crisis averted!!

I was able to download the JB4 Backend Flash Bin File and flash it without having the ECU recognized. Car started up and is running fine.

This had me scared as $h*T for a moment. I even called AAA and right when they pulled up is when the flash completed and the car started.

This just happened to me, can you help a brother out and provide some guidance on how to do this?

RMJ335i · 02-20-2017, 11:59 PM

Quote:

Originally Posted by riveraab21

This just happened to me, can you help a brother out and provide some guidance on how to do this?

Just saw this....Did you get it working again? I basically had to reflash and specify the specific BIN file for the flash.

11-23-2015, 12:12 AM	#1
RMJ335i Private 4 Rep 54 Posts Drives: 2009 Space Grey 335i Join Date: Jan 2015 Location: United States iTrader: (0)	MHD Flash went bad PLEASE HELP!! SOLVED I was flashing my car back to stock and my computer crashed in the middle of it and now my car wont start and it wont read the ECU and says HW:FFFFFFFFFFFF.... Please help me if you have any idea what to do. __________________ 09' 335i E90 Space Gray JB4 w/ E85 Backend Flash / BMS DCI / AA Intercooler / OCC / BMS CP / Alpina Trans Flash / Stage II LPFP / Muffler Delete Last edited by RMJ335i; 11-23-2015 at 01:26 AM..
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11-23-2015, 01:26 AM	#2
RMJ335i Private 4 Rep 54 Posts Drives: 2009 Space Grey 335i Join Date: Jan 2015 Location: United States iTrader: (0)	Crisis averted!! I was able to download the JB4 Backend Flash Bin File and flash it without having the ECU recognized. Car started up and is running fine. This had me scared as $h*T for a moment. I even called AAA and right when they pulled up is when the flash completed and the car started. __________________ 09' 335i E90 Space Gray JB4 w/ E85 Backend Flash / BMS DCI / AA Intercooler / OCC / BMS CP / Alpina Trans Flash / Stage II LPFP / Muffler Delete
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11-23-2015, 05:14 PM	#3
joeinsd Captain 288 Rep 899 Posts Drives: Stock 2010 e92 335i M Sport Join Date: Apr 2015 Location: San Diego iTrader: (9)	Lol. Glad you're back on the road! I haven't done any flashing, but just got my jb4 this past weekend. Will be backend flashing soon after some reading up on it. Hoping it goes smoothly.
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