New OS update for the Rabbit r1 yesterday, & I used mtkclient to dump the partitions.

8d90cef56716fe4da3f6e35087abf27823a356539ab44b53a33cbd616435d2cb boot_a.bin
4aa150165d37e99b83c8e83661665874f22f164f6cbc0092a02b3eb9ea4e977c boot_b.bin
535c6307fb70fd6f008f8379c56554a7750de16acff415cd2a352c40bc...