Step 1. Run CM2SP3 and click to [Connect]
Step 2. Select [Unlock BL]
Select [Method A]
Do Bootloader unlock
Power phone On and check bootlogo. If you see [UNLOCK!!!] text on bootlogo - go to Step 5.

If no [UNLOCK!!!] text on bootlogo:
Step 3. Select [Unlock BL]
Select [Method B]
Do Bootloader unlock
Power phone On and check bootlogo. If you see [UNLOCK!!!] text on bootlogo - go to Step 5.
If still no [UNLOCK!!!] text on bootlogo:
Step 4. Selct DIAG mode at top left
Click to [Connect], you will see firmware version and model name. Write to https://t.me/InfinityBoxTalks and Support will tell you something.
The end of story for now.
If you can see [UNLOCK!!!] text on bootlogo:
Step 5. Click to [Connect]
Step 6. [Service] - [Locks] - [Anticrack] - [Off permanently]
Step 7. Click to [Do It]
If you see text [NO VALID OS FOUND] on bootlogo

Step 8. Click to [Connect]
And then [Service] - [Locks] - [Anticrack] - [Restore] and click to [Do It]
Step 9. Now start again with Step 1.