Is it permissible to sell counterfeit (High Copy) devices of a famous brand, while informing the buyer that they are imitations, with the intention of only recovering the capital and disposing of the excess profit through charity, especially since the devices have already been purchased?

The partner who breached the agreement and bought counterfeit equipment guarantees the capital, and the sin falls upon him alone. The other partner has no relation to the forbidden goods and is not obligated to take a share of them. It is not permissible to sell counterfeit devices as long as they bear the company's logo, unless the logo is removed or permission is obtained from the rights holder.