Can you please let us know why do you want to change Cypress's VID to your VID using eFuse?
If you want the bootloader to enumerate with your own VID and PID, you may use the B2 image format. If the 0xB2 boot option is specified, the USB descriptor uses the customer-defined VID and PID stored as part of the 0xB2 image in the SPI flash/ EEPROM.
Example Image for Boot with VID and PID
Location1: 0xB2 0x10 ‟Y‟ ‟C‟ //CY Signature, 20 MHz, 0xB2 Image
Location2: 0x04B40008 //VID = 0x04B4 | PID = 0x0008
Please let us know your requirements in detail so that we can provide an apt solution
Thank you for your reply.
We develop, produce, and sell debugging tools used for debugging of the program
in development of products using micro computer.
We have already released a product used FX3 and its boot mode is Sync ADMUX.
We want to change the boot mode from Sync ADMUX to USB boot at next product.
When USB boot, PC recognizes a FX3 device as a Cypress USB normaly, but
we want PC to recognize our own VID using eFuse.