SynthWave clicked the link. The file was small, barely a megabyte, but it represented hours of reverse engineering by an unknown developer across the ocean.

A modified version of the prog_ufs_firehose_sm8150.elf programmer.

: This indicates the firehose file is not correctly patched or is incompatible with your specific firmware version.

: Flashing with the wrong firehose file or interrupted EDL sessions can permanently damage (hard brick) the device's UFS storage. Reliability Issues

A: Yes. 99% of paid services just repackage the community-developed [TOP] patch. Do not pay for it. It is freely available on XDA.

Because the patched file bypasses signature verification, it opens the device to malicious firmware injection. If the file being flashed contains malware or a backdoor, the patched programmer will happily write it to the device without warning the user.