Flashing ROM on a chinese bluetooth receiver to remove annoying sounds

For questions/doubts contact me on discord: xzVice#9386

Original firmware:
www.mediafire.com/file/yx3uexbhxjtfqgo/flash_original_fw.bin/file

Modded firmware (with john xina sounds): www.mediafire.com/file/mtjw0cx2yotyoby/flash_modded_fw.bin/file

Original sounds (extracted from the original firmware using a common hex editor)
www.mediafire.com/file/tiijdu5o7erz8xw/original_sounds.zip/file

I replaced the sounds inside the flash IC to make the John Xina BT receiver, but you could as well replace the sounds with empty bytes and remove them completely!

Be aware that if you want to repeat this process you will need a receiver that has both the bluetooth IC and the flash memory IC, so that you can connect only the flash IC to the programmer (such as the CH341A), dump its content, edit it and finally reupload it back onto the flash ic






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ze bluetooth device is ready to pearl,
ze bluetooth device is connected successfully,
ze bluetooth device is ready to pair,
ze bluetooth device is ready to pear,
ze bluetooth device is connected successfully meme,
ze bluetooth device,
ze bluetooth device has been peard successful