diff --git a/zbs243_Tag_FW/buildfw.sh b/zbs243_Tag_FW/buildfw.sh
index b5a60459..d86aadc7 100755
--- a/zbs243_Tag_FW/buildfw.sh
+++ b/zbs243_Tag_FW/buildfw.sh
@@ -9,26 +9,26 @@ BINDIR="../binaries/Tag"
 
 echo -e "\nBuilding 1.54 version..."
 make BUILD=zbs154_ssd1619 CPU=8051 SOC=zbs243 > /dev/null
-mv main.bin ${BINDIR}/SOLUM_154_SSD1619-00-${VER}.bin -v
+mv main.bin ${BINDIR}/SOL_M2_154_SSD_${VER}.bin -v
 make clean > /dev/null
 
 echo -e "\n\nBuilding 2.9 (SSD1619) version..."
 make BUILD=zbs29_ssd1619 CPU=8051 SOC=zbs243 > /dev/null
-mv main.bin ${BINDIR}/SOLUM_29_SSD1619-01-${VER}.bin -v
+mv main.bin ${BINDIR}/SOL_M2_29_SSD_${VER}.bin -v
 make clean > /dev/null
 
 echo -e "\n\nBuilding 4.2 version..."
 make BUILD=zbs42_ssd1619 CPU=8051 SOC=zbs243 > /dev/null
-mv main.bin ${BINDIR}/SOLUM_42_SSD1619-02-${VER}.bin -v
+mv main.bin ${BINDIR}/SOL_M2_42_SSD_${VER}.bin -v
 make clean > /dev/null
 
 echo -e "\n\nBuilding 2.9 (UC8151) version..."
 make BUILD=zbs29_uc8151 CPU=8051 SOC=zbs243 > /dev/null
-mv main.bin ${BINDIR}/SOLUM_29_UC8151-11-${VER}.bin -v
+mv main.bin ${BINDIR}/SOL_M2_29_UC_${VER}.bin -v
 make clean > /dev/null
 
 echo -e "\n\nBuilding 2.9 BW (SSD1619 - freezer) version..."
 make BUILD=zbs29_BW_ssd1619 CPU=8051 SOC=zbs243 > /dev/null
-mv main.bin ${BINDIR}/SOLUM_29_BW_LOWTEMP-21-${VER}.bin -v
+mv main.bin ${BINDIR}/SOL_M2_29_LT_${VER}.bin -v
 make clean > /dev/null
 
diff --git a/zbs243_Tag_FW/main.c b/zbs243_Tag_FW/main.c
index fa7f2904..ce5bc55f 100755
--- a/zbs243_Tag_FW/main.c
+++ b/zbs243_Tag_FW/main.c
@@ -558,6 +558,10 @@ void executeCommand(uint8_t cmd) {
             eraseImageBlocks();
             powerDown(INIT_EEPROM);
             break;
+        case CMD_GET_BATTERY_VOLTAGE:
+            longDataReqCounter = LONG_DATAREQ_INTERVAL + 1;
+            voltageCheckCounter = VOLTAGE_CHECK_INTERVAL;
+            break;
 #ifndef LEAN_VERSION
         case CMD_ENTER_SLIDESHOW_FAST:
             powerUp(INIT_EEPROM);
@@ -757,7 +761,7 @@ void main() {
 #ifdef DEBUGMAIN
         pr("MAIN: Ap Found!\n");
 #endif
-        //showNoAP();
+        // showNoAP();
 
         showAPFound();
         // write the settings to the eeprom
@@ -772,7 +776,7 @@ void main() {
 #ifdef DEBUGMAIN
         pr("MAIN: No AP found...\n");
 #endif
-        //showAPFound();
+        // showAPFound();
         showNoAP();
         // write the settings to the eeprom
         powerUp(INIT_EEPROM);
diff --git a/zbs243_Tag_FW/settings.h b/zbs243_Tag_FW/settings.h
index e3850c91..7a4f1348 100755
--- a/zbs243_Tag_FW/settings.h
+++ b/zbs243_Tag_FW/settings.h
@@ -3,17 +3,17 @@
 
 #include <stdint.h>
 
-#define FW_VERSION 0x0026         // version number
-#define FW_VERSION_SUFFIX "-MD5"  // suffix, like -RC1 or whatever.
+#define FW_VERSION 0x0027         // version number
+#define FW_VERSION_SUFFIX "-RDRW"  // suffix, like -RC1 or whatever.
 // #define DEBUGBLOCKS              // uncomment to enable extra debug information on the block transfers
-#define DEBUGPROTO               // debug protocol
+//#define DEBUGPROTO               // debug protocol
 // #define DEBUGOTA                 // debug OTA FW updates
-#define DEBUGDRAWING             // debug the drawing part
-#define DEBUGEPD                 // debug the EPD driver
-#define DEBUGMAIN                // parts in the main loop
-#define DEBUGNFC                 // debug NFC functions
+//#define DEBUGDRAWING             // debug the drawing part
+//#define DEBUGEPD                 // debug the EPD driver
+//#define DEBUGMAIN                // parts in the main loop
+//#define DEBUGNFC                 // debug NFC functions
 // #define DEBUGGUI                 // debug GUI drawing (enabled)
-#define DEBUGSETTINGS            // debug settings module (preferences/eeprom)
+//#define DEBUGSETTINGS            // debug settings module (preferences/eeprom)
 // #define DEBUGEEPROM              // eeprom-related debug messages
 #define VALIDATE_IMAGE_MD5       // The firmware can validate the image MD5 before displaying it. This costs about 8mAS (milliamp-second) for a 1.54, 16
 // #define PRINT_LUT                // uncomment if you want the tag to print the LUT for the current temperature bracket
@@ -59,4 +59,4 @@ void writeSettings();
 void loadSettings();
 void loadSettingsFromBuffer(uint8_t* p);
 void invalidateSettingsEEPROM();
-#endif
\ No newline at end of file
+#endif
diff --git a/zbs243_Tag_FW/syncedproto.c b/zbs243_Tag_FW/syncedproto.c
index ef8e7bd1..fb9cfd22 100755
--- a/zbs243_Tag_FW/syncedproto.c
+++ b/zbs243_Tag_FW/syncedproto.c
@@ -217,9 +217,9 @@ static void sendAvailDataReq() {
     commsTxNoCpy(outBuffer);
 }
 struct AvailDataInfo *__xdata getAvailDataInfo() {
-    #ifdef DEBUGPROTO
+#ifdef DEBUGPROTO
     pr("PROTO: Full AvailData\n");
-    #endif
+#endif
     radioRxEnable(true, true);
     uint32_t __xdata t;
     for (uint8_t c = 0; c < DATA_REQ_MAX_ATTEMPTS; c++) {
@@ -244,9 +244,9 @@ struct AvailDataInfo *__xdata getAvailDataInfo() {
     return NULL;
 }
 struct AvailDataInfo *__xdata getShortAvailDataInfo() {
-    #ifdef DEBUGPROTO
+#ifdef DEBUGPROTO
     pr("PROTO: Short AvailData\n");
-    #endif
+#endif
     radioRxEnable(true, true);
     uint32_t __xdata t;
     for (uint8_t c = 0; c < DATA_REQ_MAX_ATTEMPTS; c++) {
@@ -683,9 +683,9 @@ static bool getDataBlock(const uint16_t blockSize) {
                     curBlock.requestedParts[c / 8] |= (1 << (c % 8));
                 }
                 requestPartialBlock = false;
-                #ifdef DEBUGPROTO
+#ifdef DEBUGPROTO
                 pr("PROTO: blk failed validation!\n");
-                #endif
+#endif
             }
         } else {
 #ifndef DEBUGBLOCKS
@@ -695,9 +695,9 @@ static bool getDataBlock(const uint16_t blockSize) {
             requestPartialBlock = true;
         }
     }
-    #ifdef DEBUGPROTO
+#ifdef DEBUGPROTO
     pr("PROTO: failed getting block\n");
-    #endif
+#endif
     return false;
 }
 
@@ -948,7 +948,9 @@ inline bool processImageDataAvail(struct AvailDataInfo *__xdata avail) {
 
         } else {
             // currently not displayed
-
+#ifdef DEBUGPROTO
+            pr("PROTO: currently not shown image\n");
+#endif
             // try to find the data in the SPI EEPROM
             powerUp(INIT_EEPROM);
             uint8_t findImgSlot = findSlotVer(&(avail->dataVer));
@@ -956,6 +958,9 @@ inline bool processImageDataAvail(struct AvailDataInfo *__xdata avail) {
 
             // Is this image already in a slot somewhere
             if (findImgSlot != 0xFF) {
+#ifdef DEBUGPROTO
+                pr("PROTO: Found image in EEPROM\n");
+#endif
                 // found a (complete)valid image slot for this version
                 powerUp(INIT_RADIO);
                 sendXferComplete();
@@ -994,9 +999,8 @@ inline bool processImageDataAvail(struct AvailDataInfo *__xdata avail) {
                     return false;
                 }
             }
-
-            // keep track on what is currently displayed
-            xMemCopy8(curDispDataVer, xferDataInfo.dataVer);
+            //  keep track on what is currently displayed
+            xMemCopy8(curDispDataVer, &xferDataInfo.dataVer);
             return true;
         }
     }
@@ -1228,4 +1232,4 @@ bool validateFWMagic() {
 void initializeProto() {
     getNumSlots();
     curHighSlotId = getHighSlotId();
-}
\ No newline at end of file
+}