SC600T, I have compiled source code of android 10 but while flashing device get stuck at fastboot

SC600T, I have compiled source code of android 10 but while flashing device get stuck at fastboot

Hi gath,
What version of your module was originally burned? Do you use QFIL or fastboot to burn the newly compiled firmware?
If possible, please provide me with the IMEI number of the module.Thank you.