Is there any firmware that can provide me with brick rescue, rev1.6 requires programmer firmware

@Waterfox Downloaded from the official website, you can choose v1.

@马文斯 Upload failed, downloaded firmware determined to be correct, can not save bricks

@Waterfox Reset is also invalid, can not be restored

be900 v1 update failed, now can not enter the system, no programmer firmware, official downloaded firmware can not be written directly, no complete programmer firmware package, can not boot, how to...