diff --git a/lib/AmsFirmwareUpdater/include/AmsFirmwareUpdater.h b/lib/AmsFirmwareUpdater/include/AmsFirmwareUpdater.h
index 76cc62f8..b0ba4979 100644
--- a/lib/AmsFirmwareUpdater/include/AmsFirmwareUpdater.h
+++ b/lib/AmsFirmwareUpdater/include/AmsFirmwareUpdater.h
@@ -39,6 +39,8 @@
 #define AMS_UPDATE_ERR_SUCCESS_CONFIRMED 123
 
 #define UPDATE_BUF_SIZE 4096
+#define UPDATE_MAX_BLOCK_RETRY 25
+#define UPDATE_MAX_REBOOT_RETRY 12
 
 class AmsFirmwareUpdater {
 public:
diff --git a/lib/AmsFirmwareUpdater/src/AmsFirmwareUpdater.cpp b/lib/AmsFirmwareUpdater/src/AmsFirmwareUpdater.cpp
index 9c55804d..a082016d 100644
--- a/lib/AmsFirmwareUpdater/src/AmsFirmwareUpdater.cpp
+++ b/lib/AmsFirmwareUpdater/src/AmsFirmwareUpdater.cpp
@@ -74,7 +74,7 @@ void AmsFirmwareUpdater::setUpgradeInformation(UpgradeInformation& upinfo) {
         #endif
         debugger->printf_P(PSTR("Resuming uprade to %s\n"), updateStatus.toVersion);
 
-        if(updateStatus.reboot_count++ < 8) {
+        if(updateStatus.reboot_count++ < UPDATE_MAX_REBOOT_RETRY) {
             updateStatus.errorCode = AMS_UPDATE_ERR_OK;
         } else {
             updateStatus.errorCode = AMS_UPDATE_ERR_REBOOT;
@@ -129,7 +129,7 @@ void AmsFirmwareUpdater::loop() {
             HTTPClient http;
             start = millis();
             if(!fetchFirmwareChunk(http)) {
-                if(updateStatus.retry_count++ == 3) {
+                if(updateStatus.retry_count++ > UPDATE_MAX_BLOCK_RETRY) {
                     updateStatus.errorCode = AMS_UPDATE_ERR_FETCH;
                     updateStatusChanged = true;
                 }