TP-Link Archer C6 V2 U-boot dump / complete flashdump

Hello, I managed hard brick everything, tftp did not work, tried to start tftp via serial console, seems I've overwritten some content of u-boot. Boots are inconsistent, never successful.

Does anyone have a complete flashdump or any recommendations how to recover from this ? :smiley:
SPI flash is desoldered.

Seems that the firmware updates from TP-Link do not contain the u-boot.

current flash dump (does not boot):