Closed mattcabb closed 2 years ago
Alas there is no modifyE2P utility for mib std2 pq/zr existing/available.
Thank you for quick reply. I've investigated some things, checked the J5 dump, and it looks like:
0x003B00
data is available in /tsd/etc/audio/soundcurves/configuration.bin
;
0x003000
data is in /tsd/etc/audio/soundcurves/vw/soundparams0.bin
(there are configs for VW, Seat, Skoda in separate folders).
I have no idea if this is copy of eeprom data, backup data, default data for the mib to restore, or even something completely different.
OK, I've created custom configuration.bin
and wanted to upload in to MIB. Sadly, I can overwrite original over FTP. Any advice?
It was a nice finding - yes those are default 0x3000 (the frequency filters) and 0x3B00 (the mixer GUI settings) datasets to handle situation when you have no such a dataset in the eeprom but switch modes of the amplifier in 11th byte of long coding of 5F (for example from Canton/Fender to 4, 6 or 8 passive speakers). You cannot upload those files to J5 filesystem easily because the filesystem of J5 CPU is located not in eMMC but SPI chip on the motherboard. SPI filesystem is read only and you cannot remount it in rw mode like the filesystem of eMMC. That is exactly the system that gets flashed when you update stock fw and after reboot emerncies start to get updated.
I know that originally this topic was about eeprom, so I hope that you don't mind if I go deeper into datasets and sound configuration.
So about GUI and 0X3B00
:
In my unit (MIB2 Standard, Technisat, ZR, VW, 0478, Golf MK7, standard system) i had no data in 0x3B00
.
File /tsd/etc/audio/soundcurves/configuration.bin
shows:
004064 F70009 F70009 F70009 000000 F70009 000000 F70009 000000 0003070000 001E262E373F474F5764707D8995A6B6C7DBF0 4446 5FCA
. This data means that _ should have three sliders for equalizer (low, mid, high). This is correct.
I took this data, edited it to add information about additional two sliders, parametrized 0x3B00
with it, rebooted MIB, but no new sliders visible -everything is the same as before.
Next I asked my friend with Seat Leon to take a picture of the equalizer in his car, and to dump J5 from his unit. 5 sliders are available in GUI, but the configuration.bin
looks identical as in my VW - there's info just about 3 sliders.
My assumptions:
0x3B00
at all (empty from factory, no effect after uploading).configuration.bin
is not used by default (Seat is showing different GUI than file indicates). Might be used as fallback if sound system is not coded correctly?Need to check:
0x3B00
dataset will make any difference (I edited my data to add just two sliders. Seat also adds subwoofer menu).configuration.bin
stays unchanged after '0x3B00` parametrization.0x3000
dataset from 9VD is upload.5F
coding, bytes 4-7
are changed from VW standard FF 00 00 00
to Seat D7 0A 00 00
or Seat/Audi 9VD sound system FF 0A 00 00
.My target:
Take a look at this article: https://www.drive2.com/l/611261670785849626/
Seen it. Great piece of work. Based on it I was able to create the custom dataset for my MST2. But still, car in this article is Audi with MIB2 High, which behave different than my VW MIB2 Std.
Will experiment more and post details here: https://github.com/mattcabb/mib2-parameter-tool
Hi @mattcabb. I'm looking to modify the 0x3000
data and write it back to the unit. I can understand how I may dump the data.
How did you achieve writing the configuration data back into the head unit? Any guidance would be appreciated thanks.
@tomcollins CarScanner with PRO license and Carista ELM327 dongle.
Thanks @mrfixpl. I have CarScanner Pro and the Carista dongle. I'm able to read a couple of low 5F addresses but not 0x3000 and 0x3B00. I've not tried writing to these addresses as I want to read from them first.
I have a VW T6 with Discover Media, which is PQ platform and I'm not certain that the app supports this.
I was able to activate developer mode using the MQB platform in CarScanner.
Hi! Is it doable to dump eeprom data in MIB STD2 like in MIB2 High units with
on -f rcc /net/rcc/usr/apps/modifyE2P r 0 10000 > $DUMPFOLDER/eepromdump.txt
?