USB controller firmwares for DIY USB drive or repair
U盘控制芯片量产工具和固件，用于DIY制作U盘或者修复U盘
Alcor: 安国，这个貌似是最容易用的，直接用最新的就可以量产很多U盘。
Phison: 群联，这个要注意刷固件（勾选Do ISP）的时候要注意版本，有时候新版可能不适用旧U盘。
Innostor: 银灿，这个貌似不容易用。
U disk control chip mass production tools and firmware for DIY making U disk or repairing U disk
Alcor: Anguo, this seems to be the easiest to use, and you can mass-produce a lot of U disks with the latest ones.
Phison: Grouplink, you should pay attention to the version when you flash the firmware (check Do ISP). Sometimes the new version may not be suitable for the old USB flash drive.
Innostor: Yin Chan, this seems not easy to use.