AM623: secure Boot: Flashing/Programing the key into the processor

We have AM62x security resource download portal, where security collaterals/links/tools... are hosted
https://software-dl.ti.com/secure/software/sitara-sec/AM62X-RESTRICTED-SECURITY/sw_doc/AM62x_OTP_Keywriter_1Q23_v1.pdf
https://software-dl.ti.com/secure/software/sitara-sec/AM62X-RESTRICTED-SECURITY/OTP_writer/9.0/am62x/AM62X_OTP_Keywriter_User_Guide_09_00_00.pdf

User may request access to AM62x security resource download portal
https://www.ti.com/licreg/docs/swlicexportcontrol.tsp?form_id=337827&prod_no=AM62X-RESTRICTED-SECURITY&ref_url=ep_processors_Sitara-MPU

Please note that ECDSA is supported by ROM, but only RSA key is currently supported in TIFS and OTP keywriter tool.
Best,
-Hong

from your reply,
Please note that ECDSA is supported by ROM, but only RSA key is currently supported in TIFS and OTP keywriter tool.

can you confirm it.

In my implementation I'm using ECDSA, is there any way to flash the ECDSA key to the processor.
what procedures should I follow.

Hi, 
As the customer key is one time programable and irreversible, can we use dummy customer MPKs and MEKs as an alternate for customer generated keys for developer testing purposes.

1) where is this dummy key stored?

2) Explain the procedure for flashing the dummy customer MPKs and MEKs with OTP key writer?

3) Is this dummy key is flashed into the OTP memory or in separate location.

Please provide documents support and TI assistance to this.

Regards,

Binson

Please reply on this issue.