My sv8100 was hacked last weekend, resulting in high phone bills. I tried cold start and reset. However, the hacking program still exists, and it will be activated every night, starting to make uninterrupted international long-distance calls. Has anyone encountered this situation? How can I save my SV8100 back to a clean state? I am in China, sv8100 version 3.00, and have been working for many years. Who can share a firmware to me, I want to completely cover the current firmware. Thanks a lot