I've set this before:
cd braiins-os_am1-s9_ssh_VERSION
virtualenv --python=/usr/bin/python3 .env
source .env/bin/activate
pip install -r ./requirements.txt
after:
python3 restore2factory.py Antminer-S9-all-201812051512-autofreq-user-Update2UBI-NF.tar.gz 172.16.0.134
Extracting backup tarball...
Invalid backup tarball!
It's invalid backup....
This restore accept only the backup make before from braiins ?