Today YouTube user GBAtempDotNet has posted a video (which appears to have surfaced from Chinese site Youku.com) demonstrating the R4i on Nintendo DSi version 1.4 Firmware.
It seems the recent Nintendo DSi System Update that was reported to block flash carts has already been cracked... with a DSi flash cart successfully working on the new firmware!
Those interested can check out the video below, and the caption reads as follows: