I've got SRAM Apex 1. I have a 30t in my box, I'd be surprised if it works but I'll give it a try
Haven't tried my Apex 1, but my XT di2 worked perfectly with an 11-28 cassette.
@Jaap started
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I've got SRAM Apex 1. I have a 30t in my box, I'd be surprised if it works but I'll give it a try