Is it possible to flash-upgrade firmware in blaupunkt car cd in punto mk2?

[Most Easterly Pandas]

So this need to a lot of work I think,or there is a trick to make this job quick without disassembling dashboard?
What about if I will connect red wire to yellow?

It's hardly a lot of work tbh. Connect the wires together and you'll be back to square one with flat batterys, thats your issue in the first place!

 

[scout]

OK revised info - as you have a switched input to the stereo (as the stereo goes off with the ignition) that will be the red wire (switched input)left intact. The yellow wire should be cut and connected to a permanent feed. This may have to be a fused feed from the battery, not sure where you can get a permanent live from as I don't have a vehicle like yours. Others on here may be able to help.

 

[Most Easterly Pandas]

OK revised info - as you have a switched input to the stereo (as the stereo goes off with the ignition) that will be the red wire (switched input)left intact.

Not if the switching is canbus operated

 

[scout]

I stand corrected, new to this canbus stuff

 

[alsat1]

I remember the unit is always switched off with ignition,and I cant switch it on without ingnition in on position but when unit was switched off,the dummy alarm led under the faceplate was flashing so the power was still in the unit.
Mayby I can install switcher on red wire and then I will just switch it off when I will stop the car and then red wire will not give the power to the unit,but yellow will still give the power to memory.Is that correct?Is this will not make flat my battery?regards.