All these players i have when i open shows insert disk. The player also dont boot up. Do you have firmwares for these guys. All of these 3 different players.

Board # CF 8021 V2
Board # T8318C V2
IC # PF204 S8 1024

i have found firmwares here but its not free...
BR3188-CF8021-V2 new firmware - Other Chip Firmwares - Chinese MP3, MP4, MP5 Player Firmwares - Powered by Discuz!
BR3188A-T8318C-V2 - Action Chip Firmwares - Chinese MP3, MP4, MP5 Player Firmwares - Powered by Discuz!

Hope you can help me guys..