Tutorial: How to downgrade from 6.2 to 6.1 - Recovering a bricked system
Hello! This is a short guide about how to downgrade from DSM 6.2 to DSM 6.1 after a failed upgrade. I made this mistake myself, so i'm sharing how to fix it!
Your going to need a spare HDD or SSD. Make sure there is nothing on it.
You've installed DSM before, so you should have your synoboot.img from JunsLoader.
Your current bootloader on your USB in now NONFUNCTIONING, you will need to reflash your USB with JunsLoader.
Once you have your new, reflashed
This is a variation of the 'Clean Drive' downgrade process I've described before in several threads
1) Disconnect your raid drives
2) Connect spare HDD to SATA port 1
3) Install DSM 6.x from fresh 1.02b loader, create admin user and server name matching live system, DONT create volume/raid. Update DSM to match your pre-beta version
4) Shutdown, reconnect raid drives to SATA ports 2-n
5) Boot, login, repair system partitions on raid, shutdown
6) Remove spare H
