Help me please need firmware for bootloader and OS Q2686

Need files for bootloader DWL.wdl and OS 6.34 - 6.32 dwl (for firmware package 7.44 or 7.43) for module Q2686. I can’t find these in the official site.
I have big problem. I wrote firmware 6.52 for bootloader and firmware OS to the module Q2686, after this module don’t working.
If you has files send me please

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