HIFIWALKER H2 Firmware Version-Upgrade Description：
1, H2-V1.3 is the most original version for H2 micro usb player
2, H2_P_20211221_V1.4 for H2 micro USB player is the version with modified power supply circuit on 20211221.
3, H2_C_20220620_v1.5,for H2 type-c USB player that upgraded in 20220620.

Please Note(It's very important before you upgrade the firmware)：
1, H2-V1.3 is for original H2 micro usb player, can not be upgraded behind the V1.4 and 1.5 version of the firmware
2, H2_P_20211221_V1.4 version of the Player can be upgraded to V1.5 version of the firmware
3, H2_C_20220620_V1.5 version of the Player can not upgrade V1.4 version of the firmware
4, the firmware version and can not correspond with the machine, will cause the machine does not turn on and no sound failure
5, Each firmware comes with a firmware package for T-card upgrade: upt file.