Is it possible to improve the LMP Bluetooth in iMac from x4 to x6

hi
Is it possible to improve the LMP Bluetooth in iMac from x4 to x6

It can only be swapped out for GPU chips that were available for that model at the time.
The only two options were a 256 or 512 VRAM ATI GPU.
If you have never done any type of computer or Mac hardware upgrades before, the tear down of an iMac is not for a newbie or novice to take on a DIY project.
If your GPU went bad, you will need to bring your iMac in to an Apple Store or Apple authorized repair center to have the iMac's GPU replaced by qualified Apple technicians.
Good Luck!

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