CH571F/CH573F/CH582F/CH592F Bluetooth Development Board

Features

include compatibility with CH571F/CH573F/CH582F/CH592F, and no need to modify external components.
The RST button has been changed from the official board's pull-down PB22 soft reset to a pull-down LDO CE pin hard reset, facilitating programming with the BOOT button.
The LDO uses ME6214C33M5G with a quiescent current of only 0.7uA. CH592F supports a minimum of 1.7V, and the LDO can be replaced with 1.8V, 2.8V, or 3.0V versions.
The 0R resistor can be removed to directly power the chip from the 3V3 header, eliminating LDO current and facilitating power consumption testing.
It can be directly plugged into a breadboard, and is a double-sided silkscreened

development board. Other versions include

the CH582F onboard PA+LNA version and
the CH592X version. OPPO pop-up firmware should theoretically only support Color OS systems; see the attached video for a pop-up demonstration, and the firmware code in the comments section.