Index: /branches/BNC_2.12/ChangeLog.txt
===================================================================
--- /branches/BNC_2.12/ChangeLog.txt	(revision 8080)
+++ /branches/BNC_2.12/ChangeLog.txt	(revision 8081)
@@ -1,7 +1,10 @@
+--------------------------------------------------------------------------------
+ BNC VERSION 2.12.4 (xx.xx.2017)
+--------------------------------------------------------------------------------
+    Changed (15.02.2017): SIRGAS2000 transformation parameters adjusted to IGb14
 
 --------------------------------------------------------------------------------
  BNC VERSION 2.12.3 (05.09.2016)
 --------------------------------------------------------------------------------
-
     ADDED   (01.09.2016): number of allowed SSR biases is enlarged, some future
                           GLONASS signal and tracking mode identifier are added
@@ -33,5 +36,4 @@
  BNC VERSION 2.12.2 (18.05.2016)
 --------------------------------------------------------------------------------
-
     ADDED   (18.05.2013): expected observations in RINEX QC
     ADDED   (12.05.2016): limits for spherical harmonics/degree order extended
@@ -41,5 +43,4 @@
  BNC VERSION 2.12.1 (21.04.2016)
 --------------------------------------------------------------------------------
-
     FIXED   (21.04.2016): RINEX v2 file naming for observation files
     CHANGED (21.04.2016): release number is now part of BNC version
Index: /branches/BNC_2.12/src/bnchelp.html
===================================================================
--- /branches/BNC_2.12/src/bnchelp.html	(revision 8080)
+++ /branches/BNC_2.12/src/bnchelp.html	(revision 8081)
@@ -4037,11 +4037,11 @@
 
 <p>
-<u>SIRGAS2000:</u> The formulas for the transformation 'ITRF2008-&gt;SIRGAS2000' were provided via personal communication from CGED-Coordenacao de Geodesia, IBGE/DGC - Diretoria de Geociencias, Brazil.</u>.
-</p>
-<p>
-<pre>
-Translation in X at epoch To:  0.0020 m
-Translation in Y at epoch To:  0.0041 m
-Translation in Z at epoch To:  0.0039 m
+<u>SIRGAS2000:</u> The formulas for the transformation 'IGb14-&gt;SIRGAS2000' were provided via personal communication from CGED-Coordenacao de Geodesia, IBGE/DGC - Diretoria de Geociencias, Brazil.</u>.
+</p>
+<p>
+<pre>
+Translation in X at epoch To:  0.0026 m
+Translation in Y at epoch To:  0.0018 m
+Translation in Z at epoch To: -0.0061 m
 Translation rate in X:  0.0000 m/y
 Translation rate in Y:  0.0000 m/y
Index: /branches/BNC_2.12/src/upload/bncrtnetuploadcaster.cpp
===================================================================
--- /branches/BNC_2.12/src/upload/bncrtnetuploadcaster.cpp	(revision 8080)
+++ /branches/BNC_2.12/src/upload/bncrtnetuploadcaster.cpp	(revision 8081)
@@ -147,8 +147,8 @@
     _t0 = 1994.0;
   }
-  else if (_crdTrafo == "SIRGAS2000") {
-    _dx = 0.0020;
-    _dy = 0.0041;
-    _dz = 0.0039;
+  else if (_crdTrafo == "SIRGAS2000") { // from IGb14 (Sonia Costa, BRA)
+    _dx = 0.0026;
+    _dy = 0.0018;
+    _dz = -0.0061;
     _dxr = 0.0000;
     _dyr = 0.0000;