Unable to reset Xbee!

Hey!
I just received two of the Xbee XB24-Z7CIT-004 modules (XBee 2mW PCB Antenna - Series 2 (ZigBee Mesh) - WRL-11217 - SparkFun Electronics), and two Xbee Explorer Regulated (SparkFun XBee Explorer Regulated - WRL-11373 - SparkFun Electronics).
Both of them worked fine at first, but when i tried to upload some new settings to one of them, it got interrupted and now refuse to communicate with X-CTU.
After some searching I noticed that this is common among the Xbee's, and that it's possible to fix it by following some simple steps combined with a reset.
The most common method for resetting an Xbee seems to be this one from intractables http://www.instructables.com/id/Changing-Xbee-Baud-Rates/step5/Un-bricking-a-frozen-Xbee/, but this and all other methods that I've tried doesn’t work for me.
It seems like shortening the reset pin to ground isn’t doing anything, and I tried this on the functioning Xbee as well.

Anny suggestions of what the problem might be?
It feels like I've tried everything!
All help is appreciated!

Xbees are behaving weired. When I do hw reset on Xbee, it will bring down UNO Serial port, virtual COM port will disapear and Tx Rx led stop blinking. Really strange, dont understand what has hw reset of Xbee common with UNO. It is not short circuit, I measured it, there is 7 mA when reseting over pin 5.