i think u confused between
SYSTEM RECOVERY MODE and
DOWNLOAD MODE.. both r different and entering into both modes r also different.. In order to enter both these modes first switch off ur device, then...
System Recovery Mode: Hold Vol Up + Vol Down + Power Button.
Screen should look like these pics.
View attachment 16609View attachment 16610
Download Mode: Hold Vol UP + Power Button.
sceen should look like this with infinite loop.
View attachment 16611
Now in order to replace system recovery file with CWM recovery, first enter into DOWNLOAD MODE, plug in usb cable, FIH drive will appear.