Hello, I just bought an EZ Flash IV 2015 version (black shell). I've downloaded kernel 1.77 from Ezflash.cn site, copy the ezfla_up.bin to the SD card root folder and power on the console with R button pressed directly into GBA mode. So, 'ezfla_up.bin' is detected, updating process erase previous kernel, but then it stucks on 'writting 1%' status. No more progress. When I delete ezfla_up.bin from SD root, and try to boot, it returns: 'loader not found' message. Could you help me, please?