EasyBox 803A - OpenWrt wont boot after uboot-transfer

Hey everybody,
after hours of trying make that thing work, I decided to make a post.
I want to flash my EasyBox 803A with OpenWRT. I followed this article: https://openwrt.org/toh/astoria/arv752dpw22

I could transfer the given uboot ( took u-boot-arv8539pw22_brn/ from this site: https://downloads.openwrt.org/snapshots/targets/lantiq/xway/) and startet it. Next step: "loadx" and transfered the arv752dpw22.initsramfs-kernel.bin-OpenWRT Image. After erasing, and coping to flash I'm trying to use the "iminfo"-command. Then - nothing happens. Whats wrong? Where is my mistake?

Did you follow the guide exactly, and reverify the boot loader and image were transferred successfully by comparing with the local copies?

If you have flashed a badly transferred image/boot loader and nothing else has worked, maybe try this:
Rescue via serial

Read this article: https://clockworkbird9.wordpress.com/2014/12/25/when-easybox-803-a-meets-openwrt/
This method works fine.