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Author Topic: Fashing fail ME7.1.1 022 906 032 GJ  (Read 4368 times)
joshuaVDgraaf
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« Reply #15 on: January 01, 2024, 04:47:10 PM »

First of all, Happy new year everyone,

Thankfully to prj, i got the ECU working again, indeed somebody soldered the wrong Flash memory to the board.
Also tried galletto 1260 even that didnt work.
so i obtained a used ECU from the scrapyard ME7.5 with AM29F800BB.

Oke let me sum up some things, the Stock ECU should have these internal components:

             ME7.1.1
PartNo        = 022906032GJ
MCU           = (ST10)C167 ST/Infineon
EEPROM     = 5P08C3
Flashmem  = AM29F800BB-70SI/SE

How i started, first made a backup from the whole donor ecu (EEPROM/Flash) in BOOTMODE, then i flashed the 3.2 maps on the ME7.5 still in bootmode.
After it was done cut the power and desoldered the 29F800BB from the board.
Then over to the 3.2 ECU made a backup of the EEPROM. checked contents but had Checksum errors.
With the EEPROMtool found on nefmoto I corrected the Checksum, and flashed it back to the EEPROM.
When that was finished i cut power and began soldering to swap the AM29F800BT for the AM29F800BB.

After soldering, I powered the ECU first try it failed bootmode, Second try was a success. Directly used MPPS to flash the 3.2 basemaps again just in case the other me7.5 processor swapped locations.

Then I Read the EEPROM continents again still in bootmode, and the data looked good and no CS errors. Tried to Connect to MPPS in normal mode but no response.
I didnt know when to solder back the "000" resistor so it was still out when i tried.
I soldered the "000" resistor back and after power it was connecting normal. I desoldered it when i tried communicating but failed in the beginning.

So thank you all for helping, now i know when someone already messed up the ecu its a pita to revive it Smiley

PS. For the people that need the working FLASH(original) and EEPROM(altered), this is wat i used.



« Last Edit: January 26, 2024, 01:07:52 PM by joshuaVDgraaf » Logged
prj
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« Reply #16 on: January 02, 2024, 01:25:03 AM »

Usually they have -70SE inside, not -70SI.
SE is rated -55 to 125C while SI is rated -40C to 85C.
The upper limit is not the problem but the lower can be depending on location.

Other than that everything worked as expected.
« Last Edit: January 02, 2024, 01:27:02 AM by prj » Logged

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