Cheetah Tool realme c51 unlock error

[TATOGSM]

Waiting for device...
Connecting port: SPRD U2S Diag (COM34)
Soc Type : #TIGER T616
Getting identity... Okay
Handshaking... Okay
Sending data... Okay

Verify Signature... Okay
Sending Loaders... Okay

Analysis Security... Okay

Getting Device info...
Getting Storage info... Okay
● Device Internal Storage: 106.67 GB
● Userdata Crypto State: Encrypted?


Reading partition table... Okay
Backup Security... Okay
Reading splloader... Okay
Reading prodnv... Okay
Reading miscdata... Okay
Reading trustos_a... Okay
Reading trustos_b... Okay
Reading uboot_a... Okay
Reading uboot_b... Okay
Reading uboot_log... Okay
Reading l_fixnv1_a... Okay
Reading l_fixnv2_a... Okay
Reading l_fixnv1_b... Okay
Reading l_fixnv2_b... Okay
Getting security state... Okay
Getting device security state... Failed
[ARG ERR] UNSUPPORTED MODEL

● Total Time Elapsed: 1 min, 5 secs, 47 msecs

WorkID: 2651238