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Title: Bricked me7.5, MPPS error booting ecu Post by: Arturpr5 on October 03, 2023, 12:02:32 PM I had a 032hn bin that I attempted adding NLS to and failed miserably. Engine won't start, TC lamp stays illuminated on the dash, MPPS no longer sees the ECU, neither does nefmoto flasher. I tried doing bootmode with MPPS by grounding pin24 on start-up, but MPPS usually just says "error booting ecu"
A few times I've managed to make it start writing somehow, but it quickly ended with "no response from ECU" error shortly after beginning the flash-erase part of the process. What I think is happening is that the infineon CPU goes out of bootmode because it gets reset after the initial id process. I'll try with a 10k resistor from pin24 to ground, left connected for the whole flashing process as suggested by some. Other than that, is there anything else I can try? I don't have galetto, and no bench harness. I'm doing bootmode in the car Title: Re: Bricked me7.5, MPPS error booting ecu Post by: Arturpr5 on October 03, 2023, 01:00:07 PM Update: the resistor method didn't fix the issue. However, I now know that the CPU is indeed in bootmode, the bootstrap loader gets sent successfully but it doesn't send back the baud rate recognition info.
Title: Re: Bricked me7.5, MPPS error booting ecu Post by: _nameless on October 03, 2023, 05:12:07 PM Generic> vag me7 1mb flash
:P Title: Re: Bricked me7.5, MPPS error booting ecu Post by: Arturpr5 on October 03, 2023, 05:45:48 PM Generic> vag me7 1mb flash :P Exactly what I tried. It only starts flashing sometimes, maybe every 10th attempt, but it always fails soon after, with "no reply from ECU". Usually it doesn't even start with "error booting ecu" Also before I get hate for NLS: I didn't use the script, I did my best trying to patch the available code using the PDF from s4wiki. I failed :P I should have disabled checksums, probably. Title: Re: Bricked me7.5, MPPS error booting ecu Post by: Arturpr5 on October 04, 2023, 10:37:26 AM I did it! Wired up a ghetto bench harness with alligator clips and it flashed successfully in bootmode. I couldn't get MPPS to read or write in normal mode on bench though, "conditions not met".
Anyways, car works now with no DTCs. For my own satisfaction, I still want to know why bootmode in the car was unsuccessful. I have no other ideas apart from too low voltage (my baterry was kinda flat) or noise on the Kline from other modules interfering with the bootmode flashing process. I'd also like to know how to patch the NLS code successfully, but I know it's frowned upon here :P |