Is this really an alternative? If so they will let the corrupted image remain on Google drive and provide a correct checksum for it. Since for the ‘Team BPi’ it makes no difference at all whether their software works or not. You already bought their paperweight – mission accomplished
BTW: Do you use PhoenixCard to burn the image? If not you should. Since ‘Team BPi’ has no clue how to provide an Android image suitable to be burnt to SD card the usual way. But they also don’t care to provide such important informations. Since this information is only relevant for people that already bought hardware from them… whether they can use it or not? At least ‘Team BPi’ doesn’t care!