https://5series.net/forums/topic/994...&#entry1184172

 

Bullshit.

The software (ROGMAN/CIP) update cannot physically damage any component that it is updating. The person/dealer you talked to just doesn't want to do it (probably because they are not capable). What usually happens is that one of the components fails to update. When this happens the update must be restarted and/or each component must be updated individually if not the component may not work or work completely...

My update took nearly 24 hours with several failures - but the dealer kept at it until all the components updated successfully.

 

I am kind of agree with 'or_550i', the dealer does not simply want to do it..

 

The dealer did a full upgrade on mine after I complained of rough idle on cold start-ups. They volunteered, plus it was when it was still under warranty. They attempted 3 times, which was 7-8 hours each, and each of those times the active steering module failed. After the 3rd attempt they replaced the AS module, then ran the update again, which finally completed after another 7-8 hours.

Just glad it was under warranty....you imagine 21+ hours for labor

 

+1 on the so called damage. I believe what gets into this myth is the fact that an electronic device such as the reprogamable chips can be at a state whereby it could be close to a outright failure at the time of the softare update and simply does so at that time. Therefore the tech reports failure of X chip during update and then the myth starts. The update does not cause it. If you get the Measures Plan and or Final Report you can often see that it takes more than one attempt as some modules are marginal and don't take on the first try or there was a disturbance in the process and had to be restarted. There are some reprogamable chips that have a finite number of times they can be reprogramed. However, it is many times more then one should be updating any vehicle software. If all went perfect it still could take several hours. Many want the car overnight, start it late and then check on it first thing the next morning hoping all went well.

 

Mines in for a full update today (wednesday), SA phoned this morning to say it would take 12 hours.

 

Only time I had my software updated was August 2007 per the TCU recall, and one thing I noticed when I picked up my car was the Low Battery warning light. Apparently they do the update on battery power alone? Anyway, I turned the key and it started fine, and I have not had any battery issues since.

 

software updates suck. after getting the car back, other issues started to arise. be very careful.

 

How about performance loss? A German guy from my local CCA told me he use to work for bmw in Germany, and that a full US software update weakens performance over the original German tune. Not sure if there is any truth in it, but mine did feel a tad slower after the full update