most likely there will be a check by operator ID, if it does not match, then it does not work ...
unlocking with DC Unloker is unlikely anyway, and as is often the case with Huawei, a firmware is required to modify the firmware.
in any case, first you need to examine the board for hardware and the presence of test points or UART.
as a last resort, dump Flash memory.
really, what to do with it after🤔😅