Firmware update issue

[VaZso]

I get failed notifications both with and without the ":mass-erase:force" option when flashing.

Any ideas?

For me, I can update Pinecil from first batch under Debian fluently.

However, I have tried to update Pinecil from batch #2 and had the same error message as above.
I have noticed that just after trying to update it, the device stops communicating (error messages come up in dmesg), but it still looks somewhat fine till I don't run updater.
(There are some differences between batch #1 and #2 USB descriptors anyway, but vendor / product identifiers are the same.)

However, I was able to update Pinecil form batch 2 by running updater just after connecting the device to computer, so it could catch it in time and download appropriate data. That time I did not have mass-erase option.
Anyway, I could repeat the same process and update was went through well.

Basically it looked like this:
- Connect Pinecil while button was pressed
- Run updater utility as soon as possible
- Run again if it did not found Pinecil
- Updating started