From bab298ec76bf1113e66f5b3fde8e7e2145052c49 Mon Sep 17 00:00:00 2001
From: Leo B <l.bispo@live.com>
Date: Sat, 16 Mar 2019 16:51:22 +0100
Subject: [PATCH 1/2] fix CFUN restart on R4xxx and add +URAT options

---
 src/TinyGsmClientUBLOX.h | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/src/TinyGsmClientUBLOX.h b/src/TinyGsmClientUBLOX.h
index a577094..8d0bea4 100644
--- a/src/TinyGsmClientUBLOX.h
+++ b/src/TinyGsmClientUBLOX.h
@@ -369,7 +369,14 @@ public:
     if (!testAT()) {
       return false;
     }
-    sendAT(GF("+CFUN=16"));
+    if (!isCatM)
+    {
+      sendAT(GF("+CFUN=16"));
+    }
+    else
+    {
+      sendAT(GF("+CFUN=15"));
+    }
     if (waitResponse(10000L) != 1) {
       return false;
     }
@@ -496,6 +503,24 @@ public:
     else return false;
   }
 
+  bool setURAT( uint8_t urat ) {
+    // AT+URAT=<SelectedAcT>[,<PreferredAct>[,<2ndPreferredAct>]]
+
+    sendAT(GF("+COPS=2"));        // Deregister from network
+    if (waitResponse() != 1) {
+      return false;
+    }
+    sendAT(GF("+CGATT="), urat);  // Radio Access Technology (RAT) selection 
+    if (waitResponse() != 1) {
+      return false;
+    }
+    sendAT(GF("+COPS=0"));        // Auto-register to the network
+    if (waitResponse() != 1) {
+      return false;
+    }
+    return restart();
+  }
+
   /*
    * GPRS functions
    */

From d569d581783a0ab8c957aa9502ae8ec013ad3c01 Mon Sep 17 00:00:00 2001
From: ldab <34199302+ldab@users.noreply.github.com>
Date: Sun, 17 Mar 2019 09:57:40 +0100
Subject: [PATCH 2/2] Update TinyGsmClientUBLOX.h

Add +URAT
---
 src/TinyGsmClientUBLOX.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/TinyGsmClientUBLOX.h b/src/TinyGsmClientUBLOX.h
index 8d0bea4..aa72acc 100644
--- a/src/TinyGsmClientUBLOX.h
+++ b/src/TinyGsmClientUBLOX.h
@@ -510,7 +510,7 @@ public:
     if (waitResponse() != 1) {
       return false;
     }
-    sendAT(GF("+CGATT="), urat);  // Radio Access Technology (RAT) selection 
+    sendAT(GF("+URAT="), urat);  // Radio Access Technology (RAT) selection 
     if (waitResponse() != 1) {
       return false;
     }