One of my Grove Base Hats is not showing its own 0x04 i2c address - however other i2c devices connected to it can be detected (the 28 in this case):
$ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- 28 -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Also I have a second Grove Base Hat and the i2c address of that one shows up correctly using the same Raspberry Pi. I think the problem might have been caused when I ran the installation scripts for a GrovePi+. At the time, I didn’t notice that that is a different product. Therefore, I wanted to reinstall the original firmware of the Grove Base Hat. I found the firmware here:
However, I don’t know with which command I can reinstall the firmware. Can you please tell me the command for reflashing the firmware?