Sendo S330/300 unable to unlocked

[scientist]

i have sendo s300/s330.I connected the rx,tx,gnd of a T191 cable to the PCB.The Angel software show SIM Lock Reading after clicking the unlock button.I waited for more than 20 minutes but the sendo s300 was not able to unlock.

I tried with Philps Savvy cable, the same thing happened but was unable to unlocked the phone.

Could someone tell me what is wrong and how can I unlocked the phones.I also want to know if someone has unlocked sendo S300/S330 with Angel software.All necessary advice and comment are welcome.
Thank you all.
scientist

[bungle_uk]

Try to read old posts on how to do it. Angel software works, but you have to keep trying. WARNING - Your IMEI number will change though.

[Elco]

try several times.Angelgsm sw have some problrms on connection with some SENDO phones(like 330,M550)I have sucesfuly unlocked many S330,M550 phones but i have to try 2-3 times with angel sw to finaly unlock that phones

[byteforce]

@elco
That's correct. this happened to me every time I have a Sendo.

[dannyogolo]

Hi all,
This might be old, but after unlocking one with Angel (several times unlocking), now phone comes on and off on its own.

What seems to be wrong here ?