Espruino bricked

I've just used the stm32loader tool to 1) erase and then 2) write the latest firmware (espruino_1v92.1909_espruino_1r3.bin) that I downloaded yesterday, but the verification (-v) mode fails:

python Dropbox/Espruino/stm32loader.py -p /dev/ttyACM0 -v ~/Downloads/espruino_1v92.1909_espruino_1r3.bin
...
Read 256 bytes at 0x8034600
Verification FAILED
214668 vs 214668
0x4: 0xad vs 0x35
0x8: 0xf9 vs 0x89
0xc: 0xf9 vs 0x89
...
0x23ea: 0x1 vs 0xff
0x23eb: 0x0 vs 0xff
0x23ec: 0x0 vs 0xff
0x23ed: 0x0 vs 0xff
0x23ee: 0x8 vs 0xff
0x23ef: 0x0 vs 0xff
0x23f0: 0x4 vs 0xff
0x23f1: 0x1 vs 0xff
0x23f2: 0x0 vs 0xff
0x23f3: 0x0 vs 0xff

Am I using this right? is it meant to return these many differences? I'm attaching the log