BCC0 incorrect, got 0xff, expected 0x00, Mifare 1k magic gen 2

I have been using the chip for a while and it was good. I wrote FFFFFFFFFFFFFF078069FFFFFFFFFFFF to the block 0 sector accidentally. and now I am getting the following error whilst trying to read it.

[usb] pm3 → hf search
[-] Searching for ISO14443-A tag…[#] BCC0 incorrect, got 0xff, expected 0x00

Have I bricked it?