Can't write firmware

[desultory-zz]

I just bought my onlykey from amazon, I plugged it in and opened the onlykey app. It tells me I need to write firmware and says "Last message received: UNLOCKED BOOTLOADERv2" at the bottom. I downloaded the latest firmware file from the releases here (Signed_OnlyKey_2_1_2_STD.txt) and when I try to write it, it says "Last message received: UNLOCKED BOOTLOADERv2" and then keeps trying to flash and giving this error on loop.

It is just sitting here with a white light while plugged in, and doesn't respond to any button presses, long or short. It will flash red when it tries to write firmware though. Was I shipped a brick?

[desultory-zz]

Using 3.01 worked but the first time trying to flash it, it said the data block was too large.

The wiki is trash and should seriously be updated.