[Elvis82361]

Already used this methods, the one for PC doesn't work for me, SN write tool stops at kernel  handshake, besides I don't have complete AP DB files for wx3 as it's not on firmware for wx3 posted on hovatek forum. Right now I just need an expert using WX3 who could change his Imei with SN write tool to my device Imei and creat an NVRAM backup for me to restore.

[EMMANUS]

Do you have baseband?

[X3non]

Already used this methods, the one for PC doesn't work for me, SN write tool stops at kernel  handshake, besides I don't have complete AP DB files for wx3 as it's not on firmware for wx3 posted on hovatek forum. Right now I just need an expert using WX3 who could change his Imei with SN write tool to my device Imei and creat an NVRAM backup for me to restore.

you can only get DB files from official firmwares. 
chamelophon and tool hero methods at https://forum.hovatek.com/thread-116.html don't require PC, you can try them OR if they also don't work then you can consider looking for a hardware dongle [such as cm2, miracle box etc] or someone who has one and write your IMEI

[Elvis82361]

Probably looking for someone who has one and can write your IMEI

[hovatek]

Already used this methods, the one for PC doesn't work for me, SN write tool stops at kernel  handshake, besides I don't have complete AP DB files for wx3 as it's not on firmware for wx3 posted on hovatek forum. Right now I just need an expert using WX3 who could change his Imei with SN write tool to my device Imei and creat an NVRAM backup for me to restore.

Why not use Maui Meta @ https://forum.hovatek.com/thread-12328.html
You can download the firmware for your build @ https://forum.hovatek.com/thread-19615.html
Unpack the system.img and get the MDDB file under /etc/mddb/
If your phone is rooted then you can get those files using a root browser

[Elvis82361]

Already giving up on this, it's either my phone is detected and flash got stucked or my phone is not detected.

[hovatek]

Already giving up on this, it's either my phone is detected and flash got stucked or my phone is not detected.

I want to see screenshots of how SN writer and Maui Meta are responding.
Also, hope you're not holding any button when connecting to PC