Cannot connect to ActiveSync in Bootloader

I have problem with HardSpl. If I connect my Xperia X1 with PC, there is a problem with ActiveSync connecting. The "Tricolore" appears with SPL-0.72.0000, when i connect it with PC, USB in white field appears as usually. But i can`t connect with AC. I tried all possible. Hard reset and reinstall firmware by SEUS, uninstall and install ActiveSync again, tried it on three another computers, changing cable, shutting off firewall an many next things, but nothing happened. It`s impossible of achievement connecting.
In normal mode Active Sync is workable of course. SD card i took out naturally. I can flash the original ROMs R1A and R2A UK from SD card, but my Xperia is locked for another ROM. What can i do more? Many many thanks for any ideas.

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