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Author Topic: VCN1L Bootloader wiped/corrupted  (Read 138 times)


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VCN1L Bootloader wiped/corrupted
« on: November 04, 2020, 11:00:05 AM »

Hi All,

Could anyone give me any ideas as to why the bootloader would disappear or corrupt on the VNC1L?

Thank you in advance.
« Last Edit: November 05, 2020, 10:26:56 AM by KBridges »

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Re: VCN1L Bootloader wiped/corrupted
« Reply #1 on: November 06, 2020, 04:40:50 PM »


Why do you think the bootloader has disappeared or corrupted?

To enable the bootloader, the PROG# pin must be driven low and the VNC1L must then be reset by driving the RESET# pin low then high. Run mode can be enabled by driving the PROG# pin high and then resetting the VNC1L by driving the RESET# pin low then high.

Refer to ANVNC1L-01 Vinculum VNC1L Bootloader for more information.

The Vinculum Firmware User Manual also details programming options in section 3.1.3.

It would be worthwhile connecting a 3.3V TTL cable to the VNC1L and using FT_PROG to try and reprogram the VDAP firmware found here:


This is not a common issue that other community users could help with.
You might want to contact your local support team:


Best Regards,
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