diff --git a/src/hm/hmInverter.h b/src/hm/hmInverter.h
index b8177171..567c85cb 100644
--- a/src/hm/hmInverter.h
+++ b/src/hm/hmInverter.h
@@ -546,7 +546,7 @@ class Inverter {
                         channels = 2;
                     }
                     else if (INV_TYPE_4CH == type) {
-                        if((IV_HM == ivGen) || (IV_MI == ivGen)) {
+                        if((IV_HM == ivGen) || (IV_MI == ivGen) || (IV_HERF == ivGen)) {
                             rec->length  = (uint8_t)(HM4CH_LIST_LEN);
                             rec->assign  = reinterpret_cast<byteAssign_t*>(const_cast<byteAssign_t*>(hm4chAssignment));
                             rec->pyldLen = HM4CH_PAYLOAD_LEN;
diff --git a/src/web/html/setup.html b/src/web/html/setup.html
index ef9e06f5..6a96431c 100644
--- a/src/web/html/setup.html
+++ b/src/web/html/setup.html
@@ -923,17 +923,6 @@
                         sn_int |= BigInt(pos) << BigInt(shift)
                     }
 
-                    let first4Hex = (sn_int >> 32n) & 0xFFFFn
-
-                    if (first4Hex === 0x2841n)
-                        first4Hex = 0x1121n
-                    else if (first4Hex === 0x2821n)
-                        first4Hex = 0x1141n
-                    else if (first4Hex === 0x2801n)
-                        first4Hex = 0x1161n
-
-                    sn_int = (sn_int & ~(0xFFFFn << 32n)) | (first4Hex << 32n);
-
                     return sn_int.toString(16)
                 }