Any way to recreate GPT Table on Mediatek device?

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Hi,I have got a local brand device with Mediatek Helio G99. Actually it's bricked. I have the mtkclient backup but now I can't flash or read any partition because somehow gpt is corrupted. The phone is currently stuck in preloader mode and unfortunately there is no support from the OEM. So I want to know if there is a way to re create the GPT partitions on the device? Possibly by using mtkclient?