Unsoldering the e3 flasher Points?

[alexander2305]

Phat CECHL04 8c dyn-001 OFW 4.11

Hey i had ,i think a brick, but after solder Tristate/SBE i put back OFW 4.21 (my hdd is deletet) but it GOES!

Now i want to begin again but when i make Backup TV says: Can not start.Not the right System Memory
Is that because i have the solder??Should i remove the cable from the points??

I have a good OFW from the first try,but 4.11 and a good patched one from this
Please give me advise?

When i want to begin to downgrade now again because i made the brick with restore Backup but 4.21 do i have to cut the wire from Tristate/SBE???Or can i let it there solderd??

Please tell me that!!