No controller...

[shanevas2]

Hi, I tuned a car for a guy the other night with the new PNP for BMW E36. Everything went good except an issue with his Wideband not reading in the computer. So I had him change the input wire no big deal. But tonight I went to plug my computer in, Which I have used to tune many MS3 setups and it told me I needed to do a firmware update. So I proceeded to do so with newest one. After the update now the computer will not connect to the ECU. We even tried his that worked a few days ago and nothing. I have tried changing back to the older firmware but it just will not connect. Now It still has power lights 1 3 and 4 on. But will not connect to a computer or start the car. Any information on how to get this working again will be greatly appreciated.
Thanks

[prof315]

Check the internal fuses

[shanevas2]

I thiught about that, but would the power leds turn on if the fuse blew? I can still check it. I had spare fuses. Hope i can find them and that fixes it.

[DaveEFI]

Sounds to me like your software upgrade failed and is now corrupted - assuming it is not something as simple as a fuse.

I now always do software updates in the workshop using a decent 13.8v power supply for MS and an oldish PC with a proper serial port, and a wired LAN connection. After some frustrating attempts to do it in the car.

[Matt Cramer]

Exactly what firmware did you load to the ECU when you updated the firmware?

[shanevas2]

The new 1.5.1 hat justcame out.

[shanevas2]

Sounds to me like your software upgrade failed and is now corrupted - assuming it is not something as simple as a fuse.

I now always do software updates in the workshop using a decent 13.8v power supply for MS and an oldish PC with a proper serial port, and a wired LAN connection. After some frustrating attempts to do it in the car.

If that is the case how do I go about installing a new clean version? Or do we need to send ecu in for that?

[billr]

Have you tried the boot jumper?

[DaveEFI]

Sounds to me like your software upgrade failed and is now corrupted - assuming it is not something as simple as a fuse.

I now always do software updates in the workshop using a decent 13.8v power supply for MS and an oldish PC with a proper serial port, and a wired LAN connection. After some frustrating attempts to do it in the car.

If that is the case how do I go about installing a new clean version? Or do we need to send ecu in for that?

No. But do make sure the car battery is fully charged. And that there isn't a problem with the connection from your laptop to MS. USB connections are rather prone to picking up interference, etc.

[Matt Cramer]

Have you tried the boot jumper?

Agreed - if you manage to really get the settings confused, or had something go wrong during the firmware load, the boot jumper is often your best fix.