Help for renewing GM800HD

[nicknafs]

At first my receiver is DM800HD with second stage loader # 76 but i dont know is clone or not?
When i turn on it appear on display dream multimedia sim2 and my friends told me it is clone.
Unfortunately after turning it on ,doesn't work and Gemini project II startup page appears only !!!
Therefore i decided to change image and reloaded flash .
My laptop doesn't have RS232 port therefore i connect laptop and DM to router and i browse DM ip address and upgrade firmware according to instructions on internet.a
After too long nothing happened!

Via telnet command i can do it with . Img file but i didn' t any image and flash and firmware file with . Img .
All of them are .nfi.

Please help me how could i upgrade And set newimage

Regards

[enigma1969]

image must match the second stage bootloader, if the flashed image has a different bootloader you need to flash the bootloader.
The latest sim2 images use ssl84d, so open a browser window and flash the bootloader first(no reboot),new browser window flash the image and reboot