BOSE soundlink color BIOS or Firmware request

[XIII]

i have this bose soundlink with no charging nor any sign of life, so after digging they told me that the issues is mainly with the firmware which is corrupted, I looked everywhere for a dumb with no luck, can anyone help me out ?
PS: the chip is a 4mb chip, I found a dumb online but it has 16mb weirdly tho he had the same chip that I did but I don't know how he did it
thank you in advance.

[XIII]

i did plug in the speaker to my laptop, it got detected and I could update the firmware, weirdly the device kept going on and off during that, then once it's done the speaker kept beeping once each time I plug it into the charger then it went back to where we started.