We have the EVB of the SCM-I.mx6SX. In order to boot from the serial downloader (OTG USB) there is a need for 5V supply. We do not want to use an external supply of 5V, instead use the internal SWBST of the PMIC. The PMIC is pre-configured with SWBST_SEQ set to 0 so the SWBST does not turn on by default. We re-programmed the PMICs OTP fuses to enable the SWBST to turn on, and SWBST turns on as expected. We read the OTP_ECCI bit and it indicates an error (OTP_ECCI=1) . The appnote (AN4536) specifies that if the OTP_ECCI bit is 1 - the part should be rejected.
Can you please clarify what should be done in this situation? Is there any guidlines how to re-program a PMIC which was pre-programmed?