Help needed resetting R7000

I have a R7000 running FreshTomato for more than a year without any problem. I just screwed myself by messing up the bridges. So far I couldn't recover from it.

I used to have 3 and I wanted to reorder them (sorry I am OCD):

1. br0: 192.168.1.0/24 (5G and LAN ports)
2. br1: 192.168.240.0/24 (2.4G, for guest virtual wireless), and
3. br2: 172.30.0.0/16 (2.4G)

After changing the order to

1. br0: 192.168.1.0/24
2. br1: 172.30.0.0/16 (renamed from br2 to br1)
3. br1...

Help needed resetting R7000