diff --git a/artiq/firmware/libproto_artiq/drtioaux_proto.rs b/artiq/firmware/libproto_artiq/drtioaux_proto.rs
index ba826873a..4aeeaec12 100644
--- a/artiq/firmware/libproto_artiq/drtioaux_proto.rs
+++ b/artiq/firmware/libproto_artiq/drtioaux_proto.rs
@@ -141,8 +141,7 @@ pub enum Packet {
     CoreMgmtAllocatorDebugRequest { destination: u8 },
     CoreMgmtGetLogReply { last: bool, length: u16, data: [u8; SAT_PAYLOAD_MAX_SIZE] },
     CoreMgmtConfigReadReply { last: bool, length: u16, value: [u8; SAT_PAYLOAD_MAX_SIZE] },
-    CoreMgmtAck,
-    CoreMgmtNack,
+    CoreMgmtReply { succeeded: bool },
 }
 
 impl Packet {
@@ -505,8 +504,9 @@ impl Packet {
                     value: value,
                 }
             },
-            0xdd => Packet::CoreMgmtAck,
-            0xde => Packet::CoreMgmtNack,
+            0xdd => Packet::CoreMgmtReply {
+                succeeded: reader.read_bool()?,
+            },
 
             ty => return Err(Error::UnknownPacket(ty))
         })
@@ -876,8 +876,10 @@ impl Packet {
                 writer.write_u16(length)?;
                 writer.write_all(&value[0..length as usize])?;
             },
-            Packet::CoreMgmtAck => writer.write_u8(0xdd)?,
-            Packet::CoreMgmtNack => writer.write_u8(0xde)?,
+            Packet::CoreMgmtReply { succeeded } => {
+                writer.write_u8(0xdd)?;
+                writer.write_bool(succeeded)?;
+            },
         }
         Ok(())
     }
diff --git a/artiq/firmware/runtime/mgmt.rs b/artiq/firmware/runtime/mgmt.rs
index 95ac3870b..3fd70079d 100644
--- a/artiq/firmware/runtime/mgmt.rs
+++ b/artiq/firmware/runtime/mgmt.rs
@@ -216,7 +216,7 @@ mod remote_coremgmt {
         );
 
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::Success.write_to(stream)?;
                 Ok(())
             }
@@ -267,7 +267,7 @@ mod remote_coremgmt {
         );
 
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::Success.write_to(stream)?;
                 Ok(())
             }
@@ -293,7 +293,7 @@ mod remote_coremgmt {
         );
 
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::Success.write_to(stream)?;
                 Ok(())
             }
@@ -371,7 +371,7 @@ mod remote_coremgmt {
                 &Packet::CoreMgmtConfigWriteRequest {
                     destination: destination, length: len as u16, last: status.is_last(), data: *slice});
             match reply {
-                Ok(Packet::CoreMgmtAck) => Ok(()),
+                Ok(Packet::CoreMgmtReply { succeeded: true }) => Ok(()),
                 Ok(packet) => {
                     error!("received unexpected aux packet: {:?}", packet);
                     Err(drtio::Error::UnexpectedReply)
@@ -410,7 +410,7 @@ mod remote_coremgmt {
             });
 
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::Success.write_to(stream)?;
                 Ok(())
             }
@@ -437,7 +437,7 @@ mod remote_coremgmt {
             });
         
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::Success.write_to(stream)?;
                 Ok(())
             }
@@ -464,7 +464,7 @@ mod remote_coremgmt {
             });
         
         match reply {
-            Ok(Packet::CoreMgmtAck) => {
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => {
                 Reply::RebootImminent.write_to(stream)?;
                 Ok(())
             }
@@ -491,7 +491,7 @@ mod remote_coremgmt {
             });
 
         match reply {
-            Ok(Packet::CoreMgmtAck) => Ok(()),
+            Ok(Packet::CoreMgmtReply { succeeded: true }) => Ok(()),
             Ok(packet) => {
                 error!("received unexpected aux packet: {:?}", packet);
                 Err(drtio::Error::UnexpectedReply.into())
diff --git a/artiq/firmware/satman/main.rs b/artiq/firmware/satman/main.rs
index c7ca63775..16ccf31fb 100644
--- a/artiq/firmware/satman/main.rs
+++ b/artiq/firmware/satman/main.rs
@@ -504,13 +504,13 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
             forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
 
             error!("RISC-V satellite devices do not support buffered logging");
-            drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
         }
         drtioaux::Packet::CoreMgmtSetUartLogLevelRequest { destination: _destination, .. } => {
             forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
 
             error!("RISC-V satellite devices has fixed UART log level fixed at TRACE");
-            drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
         }
         drtioaux::Packet::CoreMgmtConfigReadRequest {
             destination: _destination,
@@ -524,7 +524,7 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
             let key_slice = &key[..length as usize];
             if !key_slice.is_ascii() {
                 error!("invalid key");
-                drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
             } else {
                 let key = core::str::from_utf8(key_slice).unwrap();
                 if coremgr.fetch_config_value(key).is_ok() {
@@ -538,7 +538,7 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
                         },
                     )
                 } else {
-                    drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
+                    drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false })
                 }
             }
         }
@@ -565,7 +565,7 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
             if last {
                 coremgr.write_config()
             } else {
-                drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck)
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })
             }
         }
         drtioaux::Packet::CoreMgmtConfigRemoveRequest { destination: _destination, length, key } => {
@@ -576,16 +576,12 @@ fn process_aux_packet(dmamgr: &mut DmaManager, analyzer: &mut Analyzer, kernelmg
                 .map_err(|err| warn!("error on removing config: {:?}", err))
                 .is_ok();
 
-            if succeeded {
-                drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck)
-            } else {
-                drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
-            }
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded })
         }
         drtioaux::Packet::CoreMgmtRebootRequest { destination: _destination } => {
             forward!(router, _routing_table, _destination, *rank, *self_destination, _repeaters, &packet);
 
-            drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck)?;
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })?;
             warn!("restarting");
             unsafe { spiflash::reload(); }
         }
diff --git a/artiq/firmware/satman/mgmt.rs b/artiq/firmware/satman/mgmt.rs
index 1c0641493..86e5794e3 100644
--- a/artiq/firmware/satman/mgmt.rs
+++ b/artiq/firmware/satman/mgmt.rs
@@ -45,7 +45,7 @@ impl Manager {
             Err(err) => {
                 self.clear_data();
                 error!("error on reading key: {:?}", err);
-                return drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack);
+                return drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: false });
             }
         };
 
@@ -53,7 +53,7 @@ impl Manager {
 
         match key.as_str() {
             "gateware" | "bootloader" | "firmware" => {
-                drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck)?;
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded: true })?;
                 #[cfg(not(soc_platform = "efc"))]
                 unsafe {
                     clock::spin_us(10000);
@@ -71,11 +71,7 @@ impl Manager {
 
                 self.clear_data();
 
-                if succeeded {
-                    drtioaux::send(0, &drtioaux::Packet::CoreMgmtAck)
-                } else {
-                    drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
-                }
+                drtioaux::send(0, &drtioaux::Packet::CoreMgmtReply { succeeded })
             }
         }
     }