I read in other thread that 1.02 BIOS version had some issues. If you want I can share 1.55 BIOS and 2.04 EC update files, to try if it works for your laptop.
The update is for TongFang GK5CP0Z and from PCS: no warranty problems. I can directly share the link that PCS sent to me.
I think the problem is that TongFang doesn't have any website in which share their motherboard's drivers, so we can only contact PCS support. I'm still waiting reply from PCS for my problem.
What is your Recoil model (TongFang name)? And what are your BIOS/EC's versions?
I also think that probably is the wrong bios file, but PCS said me that it's correct and to try again changing USB port or USB drive.
I tried again following the advices but nothing changed, so I informed them and I'm waiting for news and looking for advices from forum's people.
I received from PCS the latest BIOS files (version N.1.51) for TongFang GK5CP0Z: it contains EC update (version 2.04) and BIOS update.
The archive contains these files:
Update for the woobly foot: PCS sent me a new entire back cover, but the problem persist, so I decide to keep my custom mod.
I measured all chassis' sides and found no creases or slight inaccuracies, so I think it's a slight deformation that takes the plastic of the cover due to the unbalanced...