here are some quack b2sums as I have them:

   aa80d380ac31502dfc548da57414cd6e56ccd12e21be647f82508bec59ae3f36e4d3eee
   6d3047c73c03075b5d54c15f7bd6bba90a1bf5f73c26bbd33056e3c1e
   v207-system-quack-arm64-ab-vanilla.img
   919e506e77dd310a76c148211c41727a8fffb282794898cbccac2690f943d41a2646eba
   57984cdd91206726c2ed32637f87d65316bc74fb7c35f95442ac587d3
   v208-system-quack-arm64-ab-vanilla.img
   72744ae1014c570b94977023d2c5d5ec76b2cdecd74c5e87b7cffcf87838d3319a8a313
   0c4e79f59186500e1e8aab0f92428a5bcd08e2e9b767595c4abc287c4
   v211-system-quack-arm64-ab-vanilla.img
   b4e689db62f10fc165abd04d02bf68e5a0280dd5d5c1580ddc9801aff561bcfe9ec94e2
   768d20ff2eebb6d1e0dd5d05e981ca2c660a55114d1429c2553de3cf1
   v212-system-quack-arm64-ab-vanilla.img
   3791f1bc635309c439e06e5e3e2774c828cc95d728bbd5eaaa5a0f2d82e08decc648da2
   cfb30d38c28f45b542cf749c9a6944303dee612003f1963ef6904dc30
   v216-system-quack-arm64-ab-vanilla.img
   503324691350107f945a1e81c89438eb6d4dde120167eede2d35aee20fb20429949a94d
   a50c457304c009a46ad1ff7d1691158dd19368b1ab44546e8ffea102e
   v218-system-quack-arm64-ab-vanilla.img
   2ef83bd1911c9e4107d28f911ae1566821f5c3fb05f4dbed63be816f64266d60ba2b9b8
   3033099176bff3c1fa64b5c1830561619617ca40053d0f9c0303c73cc
   v221-system-quack-arm64-ab-vanilla.img
   486e3ec3184b203bf87b5a2211d33edd07b0667df57660eca42e386e6f6e0201aba49ec
   0c25fb30fa22dfada6435d9eda618eadfe276bba62f5bde9dfae7a129
   v222-system-quack-arm64-ab-vanilla.img