
Apollo330P SBL Updates

SBL v1.8 
- Original release for Apollo330P

SBL v1.12
- CM4 external image information in INFO1-MRAM is cleared during Ambiq MRAM recovery 
- If SWO pin is configured to other than the default pin 28, it is was not de-configured when SBL exited
- Fixed a hard fault condition that could occur if no image is provided during wired OEM MRAM Recovery 
- Wired MRAM recovery now reports the correct SSRAM size as a response for the HELLO message
- When a OEM MRAM recovery retry occurred, the Ambiq recovery count was being incremented incorrectly

SBL v1.14
- Fix for last byte being chopped from ACK of the reset command on UART interface during SBL Wired update

SBL v1.15
- This updated SBL will disable PLL before exiting, and this SBL (or newer) must be used for all trim versions on A1

SBL v1.16
- Fixed the issue of repeated MRAM recovery induced with the failure of CM4 image validation along with failed MRAM recovery

SBL v1.17
- Fixed a hardfault while attempting secure firmware OTA in non-secure bootmode. The secure firmware OTA will fail with a SWO msg and error code, as it not allowed in a non secure bootmode.

SBL v1.18
- Fixes OEM Recovery failure on MSPI0

SBL v1.18_a
- OTA image signed with keys that allows the image to be installed from SSRAM