these constand current devices are different models available, each one set for just one output out of those 100, 150, ..., 1000, 1050, 1400 mAh
If lucky, You might be able to identify the resistor which changes the current (its a resistor usually), desolder this one and solder wires onto the board instead. Then make another board with different resistor values and a switch to change between them. Works in most cases.
...or use a poti instead, but I like fixed levels to be sure on current draw and thus runtime.
If Your friend got 2 different boards and ony one SMD part on them shows a different value, this would be Your piece to change.
PS: if this sense resistor gets "smaller" and "smaller" for brighter light, I tend to install a "large" one directly onto the original board. No switch closed at all--> very low light. Thus, if ever one of the wires to the outside switch fails, not the driver nor the led gets cooked.
PPS: the PWM dimmer lets the led "flash". Less flashes --> less bright. Works appropriate with hotwires but can be annoying with led, when the frequency is very low and one could see the flashes.
(but thats primarily a heavy modders nightmare and sledom anyone else notices it)
