ZTE MF680 original firmware

[ddr33]

I couldnt search it on web, is there any way that i can get the original firmware back?

upgraded it here - https://www.tre.se/Privat/Kundservic...and/ZTE-MF680/

but then the led not blinking PURPLE color though the connection stays the same (DC-HSPA+)

felt the older firmware works better than the newer firmware. TQ

[ddr33]

any1 can help put here, thanks in advanced