BMW E SERIES SMART 315 MHZ CONVERT TO 815 MHZ

[eremgunes]

Hello All,

I have many remotes as 315 mhz. But i need to change them to 868 mhz or 433 mhz.
Example Bmw F Huf 315 mhz
Example Bmw E Series smart 315 mhz
Example Mercedes Smart 315 Mhz

Can anyone help me about it ?

[indienick]

This has been discussed many times in this forum and I don't think anyone ever figured it out. Lots of people say "i know a guy who knows a guy who knows a guy who did it" but I definitely do not recall ever seeing a definitive answer. Myself, I have tried moving the jumper wire from 315 to 868 on the PCB before and never had luck.

[Fallen]

This has been discussed many times in this forum and I don't think anyone ever figured it out. Lots of people say "i know a guy who knows a guy who knows a guy who did it" but I definitely do not recall ever seeing a definitive answer. Myself, I have tried moving the jumper wire from 315 to 868 on the PCB before and never had luck.

That zero ohm jumper resistor does not do anything, I believe it is just there for visual identification of the PCB.
If you want to know the answer to the question, you would have to but an original 868mhz and a 315mhz and look for differences in the components.
End of story.

[eremgunes]

i did that you told it before. I compared all companents. there are some different resist?rs and capacitors. Even if i moved from 868 to 315.I also changed saw but frequency dont change.

[reks13]

E series possible, F not, too many components to change.

[eremgunes]

E series possible, F not, too many components to change.

hello,

can you contact with me via skype ?