FTDI Community

General Category => Discussion - Drivers => Topic started by: timboski on March 18, 2021, 09:36:34 AM

Title: USB Continually Reconnecting
Post by: timboski on March 18, 2021, 09:36:34 AM

After programming an invalid image I lost access to the FTDI chip (VID/PID 0000:0000)
lsusb reports:

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Bus 001 Device 034: ID 0000:0000 Acme Inc. USB Serial Converter
I managed to get pyftdi (ftconf) to recognise the device and attempt to erase the eeprom.
However, it returned:

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Error: Write to EEPROM failed @ 0x7e
Now the VID/PID are FFFF:FFFF
lsusb reports:

Code: [Select]

Bus 001 Device 037: ID ffff:ffffThe device appears to be continually reconnecting
(The Device number increases on each call of lsusb, and sometimes it is not shown at all)

Is there any way back from this? (Linux or Windows)

Chip Type: FT4232H
EEPROM Type: 93C46

Title: Re: USB Continually Reconnecting
Post by: FTDI Community on March 19, 2021, 05:04:46 PM

Hello,

Can you please contact your local support team by email?
We need to get more information to help you recover the device.

https://ftdichip.com/technical-support/ (https://ftdichip.com/technical-support/)

Best Regards,
FTDI Community