DUB-LX1 after write board firmware now the phone become 1 sim how to restore 2 sim
 

Before detection connect cable to usb and enable Manufacture mode !

Qualcomm and HiSilicon: *#*#2846579#*#*
MTK: *#*#14789632#*#*
Windows: ##2846579#

ProjectMenu
1.Background setting
2.USB ports setting
Select Manufacture mode


Repair
Fixed IMEI 1 CRC: 865854047710870
Fixed IMEI 2 CRC: 865854047710999

2021-01-11 02:14:52.036 Autodetect COM port and phone type start!
2021-01-11 02:14:53.226 Found COM port: COM335
2021-01-11 02:14:53.241 Found phone type: Huawei Android phone (Qualcomm CPU)
New IMEI 1 : 865854047710870
New IMEI 2 : 865854047710999
New Bluetooth MAC : 34:B2:0A:0C:10:22
New WiFi MAC : 34:B2:0A:0C:0C:2F
New SN : DYN6R20217000788
New PCB SN : DYN6R19827000640
New Vendor : hw
New Country : meafnaf
New Model : DUB-L21
2021-01-11 02:14:53.457 Open COM port COM335 (DBAdapter Reserved Interface (COM335))...
2021-01-11 02:14:53.674 Connecting to server...
2021-01-11 02:14:55.034 Connected!
2021-01-11 02:15:06.037 Read phone secure info...
2021-01-11 02:15:06.307 Read phone basic info...

2021-01-11 02:15:06.423 Phone info data backup saved to file D:\Software\Dc Unlocker\HCU_362_RAR Pass_hcu\Backup\20210111_021506_865432119888773.BA K

2021-01-11 02:15:07.228 Repairing PCB SN...
2021-01-11 02:15:07.297 Repair PCB SN success!
2021-01-11 02:15:07.297 Calculating phone secure data...
2021-01-11 02:15:11.285 Calculate phone secure success!
2021-01-11 02:15:11.316 Writing phone secure data...
2021-01-11 02:15:11.648 Writing phone secure data success!
2021-01-11 02:15:12.150 Repair IMEI 2...
2021-01-11 02:15:12.166 Calculating secure data...
2021-01-11 02:15:12.568 Calculate success!
2021-01-11 02:15:12.589 Writing secure data...
2021-01-11 02:15:12.906 Writing secure data success!
2021-01-11 02:15:13.323 Repair IMEI 2 success!
2021-01-11 02:15:13.339 Repairing Vendor and Country...
2021-01-11 02:15:13.354 Calculating phone secure data...
2021-01-11 02:15:13.896 Calculate success!
2021-01-11 02:15:13.911 Writing phone secure data...
2021-01-11 02:15:13.958 Writing phone secure data success!
2021-01-11 02:15:14.359 Repairing Vendor and Country success!
2021-01-11 02:15:14.359 Writing model...
2021-01-11 02:15:14.397 Write model success!
2021-01-11 02:15:14.397 Repairing SIMCARDMODE...
2021-01-11 02:15:18.844 Repair SIMCARDMODE success!
2021-01-11 02:15:18.859 Read from server...
2021-01-11 02:15:19.345 Read from server success!
2021-01-11 02:15:19.361 Repairing SN...
2021-01-11 02:15:19.376 Repair SN success!
2021-01-11 02:15:20.116 Finished!

Repair on HCU sim card mode.

same condition :(


Qualcomm and HiSilicon: *#*#2846579#*#*
MTK: *#*#14789632#*#*
Windows: ##2846579#

ProjectMenu
1.Background setting
2.USB ports setting
Select Manufacture mode


Repair

2021-01-11 05:43:49.291 Autodetect COM port and phone type start!
2021-01-11 05:43:50.481 Found COM port: COM335
2021-01-11 05:43:50.497 Found phone type: Huawei Android phone (Qualcomm CPU)
New IMEI 1 : 865854047710870
New IMEI 2 : 865477654567894
New Bluetooth MAC : 34:B2:0A:0C:10:22
New WiFi MAC : 34:B2:0A:0C:0C:2F
New SN : DYN6R20217000788
New PCB SN : DYN6R19827000640
New Vendor : hw
New Country : meafnaf
New Model : DUB-L21
2021-01-11 05:43:50.681 Open COM port COM335 (DBAdapter Reserved Interface (COM335))...
2021-01-11 05:43:50.913 Connecting to server...
2021-01-11 05:43:53.713 Connected!
2021-01-11 05:44:04.003 Read phone secure info...
2021-01-11 05:44:04.280 Read phone basic info...

2021-01-11 05:44:04.395 Phone info data backup saved to file D:\Software\Dc Unlocker\HCU_362_RAR Pass_hcu\Backup\20210111_054404_865854047710870.BA K

2021-01-11 05:44:04.983 Repairing PCB SN...
2021-01-11 05:44:05.036 Repair PCB SN success!
2021-01-11 05:44:05.052 Calculating phone secure data...
2021-01-11 05:44:05.438 Calculate phone secure success!
2021-01-11 05:44:05.469 Writing phone secure data...
2021-01-11 05:44:05.554 Writing phone secure data success!
2021-01-11 05:44:05.871 Repair IMEI 2...
2021-01-11 05:44:05.902 Calculating secure data...
2021-01-11 05:44:07.023 Calculate success!
2021-01-11 05:44:07.045 Writing secure data...
2021-01-11 05:44:07.346 Writing secure data success!
2021-01-11 05:44:07.663 Repair IMEI 2 success!
2021-01-11 05:44:07.679 Repairing Vendor and Country...
2021-01-11 05:44:07.694 Calculating phone secure data...
2021-01-11 05:44:08.096 Calculate success!
2021-01-11 05:44:08.127 Writing phone secure data...
2021-01-11 05:44:08.165 Writing phone secure data success!
2021-01-11 05:44:08.499 Repairing Vendor and Country success!
2021-01-11 05:44:08.530 Writing model...
2021-01-11 05:44:08.567 Write model success!
2021-01-11 05:44:08.583 Repairing SIMCARDMODE...
2021-01-11 05:44:09.233 Repair SIMCARDMODE success!
2021-01-11 05:44:09.256 Read from server...
2021-01-11 05:44:09.589 Read from server success!
2021-01-11 05:44:09.604 Repairing SN...
2021-01-11 05:44:09.635 Repair SN success!
2021-01-11 05:44:10.238 Finished!

Memo log saved to D:\Software\Dc Unlocker\HCU_362_RAR Pass_hcu\Logs\20210111_054410_HCU-_RepairUmts_0O59I62YS093203.txt

thanks boss it's working after change the firmware.