Team-Xecuter Community

I've had a 128gb SD card since I bought my Switch, and I finally had some spare cash so I got a 256gb card today. I've now tried twice to clone the 128gb to the 256gb and resize the non-hidden partition (once with AOMEI and once with Easeus) and despite the clone being apparently successful both times, I get a brief flash of the SX OS logo when I turn the Switch on with the RCM jig and dongle connected, then a black screen, then it boots into the normal sysnand without going into SX OS at all.

Am I doing something wrong? Have later versions of SX OS become more finicky about the exact SD card they're on? If anyone can help me get SX OS working on my new SD card I'd hugely appreciate it.