[intersk]

How to boot Unisoc (SPD) phone into Diag mode WHITHOUT dongl ? All programs that can do this require a dongle to work.

[X3non]

How to boot Unisoc (SPD) phone into Diag mode WHITHOUT dongl ? All programs that can do this require a dongle to work.

even if you did manage to get into diag mode without a dongle, you'd still be left hanging with how to write imei (which is your goal and which still requires a dongle to achieve)