@sharat for s1 packet:

@Wangguotong pls go through our online-manual firstly, and then to define next steps.

you mean changed the saving format in csv file? when we save data to file

your s1 packet is right, pls use our ANS to save file which maybe met your request. https://developers.aceinna.com/devices/record-next

refer to our ANS page and go through link: https://developers.aceinna.com/devices/connect
if still not working, pls show some clear pic of your HW and SW, it will be better for understanding your status.

@yyzakaria we have online gui to connect and measured the IMU, pls refer to ANS link
also you need to read our online manual firstly, and then you will be more familiar with it, manual link

If need, we can send to you one testing EEPROM image(saved from OpenIMU300ZA in my hands, SN: 1808400528 Version is 1.0.30), it will support your IMU working normally in function.
It means function is ok, but the exact performance can not be guaranteed because your number plant calibration maybe already erased by wrong ST-LINK flashing(start size is not right when flashing APP image)

when you started flashing which start address used? what is your SN number?

@sharat 2 ways:

1. at first before you flashed by ST-Link, saved your EEPROM image(from 0x80000000, and at least 30000 size, follow below pic) as backup, use the backup image to recover it.
   
2. flashing IMU app on apps page of link, newest plant version IMU will be uploaded later. old version can be used firstly.

which start address used when you flashing? did you saved your original EEPROM(FW, Calibration data and so on) data firstly?
if not, It has been brushed to death i doubt.
pls tell me:

1. current your status
2. how did you flashed? steps
3. backup your FW or not firstly.