There is no single "universal" download link, as different firmware versions support different NAND flash memory chips. You should look for the most compatible version on specialized archives like , which hosts a variety of FirstChip tools: FirstChip FC1178BC MpTools (2018 Versions):
. It provides the necessary "Flash ID" required to select the correct firmware. You can find it at USBDev.ru . firstchip fc1178bc link download