BQ41Z50EVM: Writing/reading data flash from bqstudio doesn't work

Part Number: BQ41Z50EVM
Other Parts Discussed in Thread: BQSTUDIO, , EV2400, EV2500

Tool/software:

I am using a bq41z50evm board with an EV2400 and using bqStudio.

The bqStudio version is 1.3.128

The 41z50evm firmware is TI's release from April, 2025.

In bqStudio, I look at Data Memory -> Settings -> DA Configuration

I select Import Defaults, and the DA configuration field is set to 0x0012, which is the correct default value.

I select "Write All" to write the default values I just imported.  Then I select "Read All" and DA configuration field changes to 0xffff.

That happens to several other fields also:  Temperature Mode, Ext Temperature Mode change to 0xffff, LED configuration to 0xb22, Temperature Enable to 0xbb8, etc.

Am I doing something wrong, or do I perhaps have a bad flash sector on the board, or is my problem to be found elsewhere?