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matchew
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« Reply #195 on: August 31, 2012, 09:54:12 AM »
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My BDM Clone running 3.1.0.1255 will not flash e2p's that have been modified unless the checksum for that page is corrected. It also won't flash an e2p that has a mismatch between the first and second half of the flash.
There is more to it than you think. This ~tool is just a generic BDM there is nothing intelegent about it. Try changing the same byte in what you are calling 'first and second half' of the flash with out touching any sums.... There is more than 1 type of EEPROM in these ECU's and this ~tool can not distinguish between them. |
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Jason
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Breaks everything!
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« Reply #196 on: August 31, 2012, 10:02:26 AM »
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Do you have an explanation for why this occurs?
Based on my experiments if you change any single byte in the e2p, it won't flash unless you update the checksum for that page. If you replicate that changed byte to the second half of the e2p, it still won't flash. (the 2048byte e2p's have the first half of the flash mirrored to the second half of the flash with a (pagesum -1) * -1, whereas the 1024 byte e2p's use ((pagesum + pagenumber) -1 ) * -1)
No matter how many times you try to write an uncorrected e2p, it won't flash. The second you fix the checksum, it flashes.
I can post two example e2p's for you to try if you like.
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majorahole
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« Reply #197 on: September 05, 2012, 10:01:55 AM »
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ok, so i got my bdm today.
now i just need to figure out how to connect to the ecu, is there a way around a jtag header or pogo pins and special stand??
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Jason
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« Reply #198 on: September 05, 2012, 10:06:14 AM »
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You can buy a BDM fixture, you can build one, you can hold the pogo pin assembly by hand, you can prop something up against it, etc.
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majorahole
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« Reply #199 on: September 05, 2012, 10:20:14 AM »
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tape it down with painters tape?? lol
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thom337
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« Reply #200 on: September 05, 2012, 03:17:56 PM »
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JTAG pins, a little bit of solder, and some patience go a long way.
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jooo
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« Reply #201 on: September 06, 2012, 05:35:39 PM »
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Repost from another thread since this might be a more suitable thread for my question. Can anyone help to extract or point me to MLHFM or perhaps rather the MSHFMTP table from the MED9 RS4 4.2fsi? MSHFMTP= mass flow from HFM depending on period (for me this indicate the MSHFMTP is for some new HFM6 or 7 sensor) Though I don't know how the rs4 could not have a MLHFM table since the RS4 4.2fsi still use a Bosch HFM5 sensor as all me7. Anyhow I have not found any table similar to a 512bytes MLHFM while checking the .bin. Please help! (I want to use the RS4 4.2 MAF in a custom file) Here is a ori file RS4 4.2 fsi. http://nefariousmotorsports.com/forum/index.php?topic=48 |
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k0mpresd
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« Reply #202 on: September 06, 2012, 07:22:39 PM »
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JTAG pins, a little bit of solder, and some patience go a long way.
word up.  |
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majorahole
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« Reply #203 on: September 07, 2012, 07:31:34 AM »
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so ive read that there might be some pins that might be different then the real bdm, and if connected wrong it will ruin your ability to read/write from bdm.
you guys know anything about this? or was this just the older clones??
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Jason
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« Reply #204 on: September 07, 2012, 07:37:56 AM »
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I think the issue is the BDM cable was assembled incorrectly in some cases with the pin 1 stripe on the cable flipped in the connector...
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majorahole
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« Reply #205 on: September 07, 2012, 07:48:48 AM »
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so to make sure, check for voltage between gnd pin and +12 pin?
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SVSPORT
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« Reply #206 on: September 07, 2012, 10:46:43 AM »
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Repost from another thread since this might be a more suitable thread for my question. Can anyone help to extract or point me to MLHFM or perhaps rather the MSHFMTP table from the MED9 RS4 4.2fsi? MSHFMTP= mass flow from HFM depending on period (for me this indicate the MSHFMTP is for some new HFM6 or 7 sensor) Though I don't know how the rs4 could not have a MLHFM table since the RS4 4.2fsi still use a Bosch HFM5 sensor as all me7. Anyhow I have not found any table similar to a 512bytes MLHFM while checking the .bin. Please help! (I want to use the RS4 4.2 MAF in a custom file) Here is a ori file RS4 4.2 fsi. http://nefariousmotorsports.com/forum/index.php?topic=48MED9 has no MLHFM. Only MSHFMU....1C489E=129X1 You can calculate the KFKHFM,also. |
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Beaviz
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« Reply #207 on: September 11, 2012, 02:36:19 AM »
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Just a simple noob question.  If I want to change the RPM limiter is it enough to change NMAX only or should all the NMAXxxx (e.g. NMAXOG, NMAXDV, NMAXDVG) values be changed? I guess that the answer is all, but just want to make sure. What happens if NMAX is not changed and the other values are? Let's say that NMAX = 6800RPM and all others 7500RPM. |
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majorahole
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« Reply #208 on: September 11, 2012, 11:54:06 AM »
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ok hoping to get into this this weekend, but got some issues first.
my electro-mechanical steering is being...weird.
going out randomly for a few seconds here and there, sometimes once a day, and sometimes not the whole week...? so i have to figure that out first, so i know whether i need to take it to the dealer or not. im thinking its a battery problem, as its been slow turning over since this issued has started, so ill get one this weekend and find out.
but while im waiting, whats the deal with these shear bolts? how do i remove them? i haven't looked at mine yet, but from what ive seen, there are no normal heads for a socket or screw driver? also where can i get these?
thanks for any info
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majorahole
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« Reply #209 on: September 15, 2012, 02:57:09 PM »
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nobody??
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