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Reading the Sirius 32N ecu with Galletto v54 (With Video)
After I received lot of questions about a tricky cable set of the China-clone Galletto V54 ECU programming tool, from the internet, from people with who I hang out etc. I decide to make a video and release it on Youtube.
The Galletto V54 tool is a nice tool for r/w the memory ( flash IC ) content of the desired ecu. The tool can be used on some cars through OBD2 connector, this is the easiest way to r/w the ecu.
But this is not the safest way. The Galletto V54 also deals with so called “Boot mode” r/w and BDM r/w too. This is the Galletto V54:
Sometimes people make some mistakes when they talk about r/w the ecu. They think this and such a tool can read the firmware of the uC from the ecu, but that is not true. Every ecu has a kind of flash memory inside, where all the setups of the car are programmed and the uC will use that infos.
So, with this kind of tool we can r/w the setups of the cars. Something like the ignition setup, EGR reacting setup, immobilizer setup etc…
If you think you can with such of tool read the firmware and hack it and write it back than you are wrong and pls. don’t buy this kind of tool. You probably need some programming tool for the desired uC. As I wrote above, this and lot tools this kind have the ability to r/w through several type of communication connection and protocols.
I will list 3 most common types:
– OBD2 connector
– Boot mode
– BDM connector
The OBD connector is fitted in the car and you will connect the r/w tool to it and do the job. Most tools won’t read out the complete content of the flash, just a part of it, where the so called MAP’s are are located. The maps are the setting of several parameters of the behavior of the engine.
Like the map for injection, the EGR map etc…
The BOOT MODE is a type of communication where the targeted ecu must be set in a stage so the r/w tool can access the flash memory content, and do the desired operation. The ecu must be opened and poked around some test point’s, set some extra wirings to set some needed signals so the ecu will/can go to boot mode. This is a dangerous proccess and the ecu can be toasted if something goes wrong, or by usind wrong wirings.
The wrong wires labeling in the documentation of the r/w tool was the inspiration to make this video.
The BDM type of reading is maybe a safer way to r/w than the Boot mode but also with high risk to damage the ecu. Actually, you must also open the ecu but in this case you will use some connectors for the desired ecu which will come with your tool and you don’t must digging around the test points etc. But there are also feeding some extra signals but you also have the place where you must put the tip from the r/w tool…
This is a set of BDM tool for r/w:
The safest way to make a good backup of the ecu flash memory is through BDM reading. The second option is the Boot mode and the last one is the reading through OBD connection.
In that case, you must have a big acknowledge about ecu repairing, so you can decide is the content ok or not after read out the content through OBD.
If you wish to be safe, every time use BDM programming mode, this is actually the factory type of programming of the ecu’s and that is the reason why you can find that connector on the PCB of the ecu. Watch the video here and you will see how to set up in boot mode the Siemens Sirius 32N ecu.
I hope you enjoy this tutorial and will save lot of repair time.
This article was prepared for you by Christian Robert Adzic from Novi Knezevac-Serbia.
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