amaishhamidgt63

My 2023 gls 63 was tuned and the intake manifold cracked Mercedes then did the repair and had me come in to flash it to stock my tuner was closed because of holidays so now I ask you for help
I did Ecu flash to stock then tcu and Mercedes swapped the CPC out to the original stock one and then we tried to start the car. Which ended up putting it into bootloader mode and the car won’t start. now the dealer can’t figure out a fix and I need the car back by tmrr for a event
they contacted engineering but no response yet