AM2434: Uniflash not working after enabling secureboot

Hello

I am migrating from a GP to an HS chip and am trying to write to OTP and enable secureboot.

After writing RSA key to OTP but not enabling secureboot (not setting --keyrev 1), I am able to use uart_uniflash.py to load my unsigned SBL and boot my application.

After doing the same process but enabling secureboot and building a signed SBL and signed uniflash image, uniflash fails to receive the SBL.

I tried using both the signed and unisgned uniflash image, and the signed and unsigned sbl image.

Do you have any suggestions on what may be the issue?

Also, if I do not write protect anything when running gen_keywr_cert.sh can I enable then disable secureboot?

Thanks

Mikey