diff --git a/boards/seeed-mesh-tracker-x1.json b/boards/seeed-mesh-tracker-x1.json
index 347aca53..5b6af104 100644
--- a/boards/seeed-mesh-tracker-x1.json
+++ b/boards/seeed-mesh-tracker-x1.json
@@ -40,7 +40,7 @@
   "name": "Seeed SenseCAP MeshTracker X1",
   "upload": {
     "maximum_ram_size": 248832,
-    "maximum_size": 815104,
+    "maximum_size": 811008,
     "speed": 115200,
     "protocol": "nrfutil",
     "protocols": [
diff --git a/boards/seeed_sensecap_solar.json b/boards/seeed_sensecap_solar.json
index d6630d82..c81cf581 100644
--- a/boards/seeed_sensecap_solar.json
+++ b/boards/seeed_sensecap_solar.json
@@ -40,7 +40,7 @@
   "name": "Seeed Studio XIAO nRF52840",
   "upload": {
     "maximum_ram_size": 248832,
-    "maximum_size": 815104,
+    "maximum_size": 811008,
     "protocol": "nrfutil",
     "speed": 115200,
     "protocols": [
@@ -57,4 +57,4 @@
   },
   "url": "https://wiki.seeedstudio.com/meshtastic_solar_node/",
   "vendor": "Seeed Studio"
-}
\ No newline at end of file
+}
diff --git a/boards/tracker-t1000-e.json b/boards/tracker-t1000-e.json
index ac66b504..26ea4565 100644
--- a/boards/tracker-t1000-e.json
+++ b/boards/tracker-t1000-e.json
@@ -39,7 +39,7 @@
   "name": "Seeed T1000-E",
   "upload": {
     "maximum_ram_size": 248832,
-    "maximum_size": 815104,
+    "maximum_size": 811008,
     "speed": 115200,
     "protocol": "nrfutil",
     "protocols": [