HikVision 7608Ni-K2 GUI 4 go back to GUI 3-DOWNGRADE

[pepeEL]

Hi
I have this NVR and some day i update my firmware to GUI 4.0 which i found on Russia FTP Hikvision

http://ftp:/ftp.hikvision.ru/01. Ре...XX 86ХХ NI-K/DS-7XXXNI-K2 K4 8XXX-K8/GUI 4.0/

But i see that this firmware is no update and HikVision still update support 3.4 GUI. Is any chance to go back to firmwarelatest 3.4 series ? I have an original multilanguage NVR.
DOWNLOAD EU PORTAL
Please help me.

 

[pepeEL]

Anybody can help me please....