Even clearer beta blobs error message

Author: airsquared

build.gradle

@@ -234,4 +234,4 @@ if (hasProperty('buildScan')) {
         termsOfServiceUrl = 'https://gradle.com/terms-of-service'
         termsOfServiceAgree = 'yes'
     }
-}
+}

src/main/java/airsquared/blobsaver/app/TSS.java

@@ -302,6 +302,9 @@ private List<Utils.IOSVersion> getIOSVersions() throws TSSException {
                     Stream<Utils.IOSVersion> signedBetas = getSignedBetas(deviceIdentifier);
                     return Stream.concat(signedFirmwares, signedBetas).toList();
                 } catch (Exception e) {
+                    if (e.getMessage().startsWith("HTTP Response was (GET https://www.betahub.cn/api/apple/firmwares/")) {
+                        throw new TSSException("There was an error retrieving beta versions; try without including beta versions.\n\nThis is a known issue. See issue #603 on GitHub for more information.", false, e);
+                    }
                     throw new TSSException("There was an error retrieving beta versions; try without including beta versions. For more information, try again with the debug log open.", false, e);
                 }
             } else { // all signed firmwares