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General question here about bad flash a while back.
Basically went to flash like normal and it failed, don't recall the error and can't find the full log but I left the ignition on and only hit write again. It worked but I got the following error on the second write attempt. I assume it is because the first failed write erased everything? Code:
[11:46:29.509] reading vehicle info... |
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but always safer to try writing again before turning ignition off as you can always try again after turning ignition off. The ECU is still in program mode from previous write attempt, till ignition is turned off. Their are three ROM area in the ECU 1. SH Boot area (very low level boot area) need serial communication to access ie soldering wires to ECU 2. USER BOOT Area can be accessed via OBD port 3. USER ROM area - the area flashing devices read/erase/write/talk to. Appears all flashing devices only write to the third area USER ROM area. So you connect your flashing device, it initially tries to communicate with the software code in the USER ROM area via OBD communication method. If no response the Tactrix and other system can try communicating with the USER BOOT area code. This is your get out of jail free card if flash fails part way through. Main causes of failed flash are bad connection to obd port, low or flat car battery or laptop issues. As I understand it Tactrix tries to communicate with the ECU via the OBD communication method first . I believe this is communicating via the software thats contained in the rom you flash. You only get one go at this method as USER ROM area is ERASED before write takes place. I suspect what happened was 1. Initial flash failed part way through for unknown reason. 2. USER ROM area now erased or partial write 3. Second time tectrix tries to talk to ecu via code in USER ROM area which is trashed it fails 4. Tectrix tries comms via USER BOOT code, comms established , USER ROM area erased and written successfully. The big problem occurs when you write complete rubbish code, or for some reason the partially written rom cause the ecu to loop or go into some other weird state where you have no communication via the OBD port. Check your obd connection by either READING ROM or LOGGING and wiggle connection if it drops out during READ or you get heaps of short log files you have connection issues. |
Yeah I suspect it was bad connection, though I always do a read first and that was fine. Possibly the port/pins are damaged from constantly unplugging a scangauge and connecting a BT dongle or tactrix at the track to collect data. Haven't tried a write since but logging has been fine.
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even better buy one with an inbuilt switch [ame="http://www.amazon.com/gp/product/B00UR5XBMW/"]Amazon.com: OBD 2 16pin Male to Female Right Angle Diagnostic Extension Cable with Power Switch: Automotive[/ame] |
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Hi All,
Just wondering Has anyone got a rom raider logging definition made yet? Also about almost bricking the ECU, My laptop battery (was faulty and showing wrong battery level) has died before during a write and i turned ignition off and then on and was able to write the flash again fine. Its also happened on my WRX before (i know need a new laptop battery) and same thing it was able to write fine on retry. |
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The RR guys busy on 2015wrx ecu, best talk to them re any work on rr logging for brz/86 only option with tactrix is the SD card logging at present Re batterys , I would not push your luck, best to plug laptop into mains power , only have ecuflash running and disable wifi . Also make sure car battery is good. Tactrix/ecuflash has OEM recovery mode (user boot) if normal obd mode (user rom) fails but its still possible to get ecu into a state where it wont recover when laptops or car battery dies mid flash if the user rom area loops or goes into a weird state due incomplete flash Same with any other flashing system. |
added ZA1JA02J rom for middle east region
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@steve99 was able to flash a friend's auto 15' FRS with Stg. 1 93 pumpgas ROM.
I let Ecuflash correct the checksum. The Ecu did not want to accept the key (like it was an Ecutek/BRZEdite, etc. locked ECU but it was not, he bought the car brand new fresh from the lot), until it finally accepted it and successfully flashed the ROM. I can't thank you enough for this post. It helped tremendously!! He has a D00D ROM. |
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usually that sort of thing is caused by bad connectio, tactrix adapter has thin pins ,i bent mine inwards slightly. or you hit go to flash without waiting 15 secs i always do a read first and wiggle cable to see i have a soild connection the obd ports in thes cars can be a intermittent. |
I always do a full read before doing a write.
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