[Solved] Locating Boot Pin on LN882H SMD Board: Is GPIOA9 the Key?

LN882H SMD board...reaching the boot pin for flashing

I have an LN882H attached to a board that apparently connects the wifi antenna of the smart switch among other things. That host board is attached via SMD pads to the PCB, so not so easy to find the boot pad on the back of the LN882H board. My question was one of access to that pad....but I may have answered my own question, given access (apparent in the image) to a pad for GPIOA9. I think that maps to boot.... open to thoughts or comments. I hope so, because that would make things a lot easier.



AI: Do you have access to the schematic or datasheet for the LN882H board to confirm if GPIOA9 is indeed the boot pin?
No
AI: Could you share your level of experience with electronics and flashing procedures to better tailor the advice?
intermediate

yes, A9 is the boot pin to be pulled low to get the device into uart download mode

https://www.youtube.com/watch?v=plegNyuHnWc
https://www.elektroda.com/rtvforum/topic4028087.html

https://www.elektroda.com/rtvforum/topic4045532.html

don't forget to take a backup before flashing!

https://github.com/openshwprojects/FlashTools.../LightningSemi/LN882H_CMD_TOOL_Variation1.zip

Many thanks

Determined that GPIO pad A9 maps to Boot