Pycom Firmware Update Tool failed to upload FW

[Thosch42]

Hi!
After I played around with some custom FW builds, I wanted to upload the original 1.7.5.b1 FW, but the update failed!

I erased the flash with the esptool.py, but the update tool won't work.

Any ideas anyone?

Cheers,
Thomas

[Thosch42]

Solved it.
I used the pycom upgrader 1.1.1.b2 to downgrade to FW 1.6.0.b1. Afterwards, the upgrade to 1.7.5.b2 worked seemlessly.