diff --git a/apps/plugins/iriver_flash.c b/apps/plugins/iriver_flash.c
index 2e27a9f748..562a680a60 100644
--- a/apps/plugins/iriver_flash.c
+++ b/apps/plugins/iriver_flash.c
@@ -334,7 +334,7 @@ static int get_section_address(int section)
 int flash_rockbox(const char *filename, int section)
 {
     struct flash_header hdr;
-    int pos, i, len, rc;
+    int pos, i, len/*, rc */;
     unsigned long checksum, sum;
     unsigned char *p8;
     uint16_t *p16;
@@ -390,7 +390,7 @@ int flash_rockbox(const char *filename, int section)
         rb->lcd_putsf(0, 3, "Erasing...  %d%%", (i+SEC_SIZE)*100/len);
         rb->lcd_update();
         
-        rc = cfi_erase_sector(FB + (i + pos)/2);
+        /*rc = */cfi_erase_sector(FB + (i + pos)/2);
     }
     
     /* Write the magic and size. */
diff --git a/bootloader/ipod6g.c b/bootloader/ipod6g.c
index 0d0a4c53d1..30db29c783 100644
--- a/bootloader/ipod6g.c
+++ b/bootloader/ipod6g.c
@@ -326,7 +326,7 @@ static bool pmu_is_hibernated(void)
  */
 void main(void)
 {
-    int fw = FW_ROCKBOX;
+//    int fw = FW_ROCKBOX;
     int rc = 0;
     unsigned char *loadbuffer;
     int (*kernel_entry)(void);
@@ -337,7 +337,7 @@ void main(void)
     i2c_preinit(0);
 
     if (pmu_is_hibernated()) {
-        fw = FW_APPLE;
+//        fw = FW_APPLE;
         rc = launch_onb(1); /* 27/2 = 13.5 MHz. */
     }
 
@@ -375,7 +375,7 @@ void main(void)
         if ((btn == BUTTON_MENU)
                 || (btn == (BUTTON_SELECT|BUTTON_LEFT))
                 || (btn == (BUTTON_SELECT|BUTTON_PLAY))) {
-            fw = FW_APPLE;
+//            fw = FW_APPLE;
             rc = kernel_launch_onb();
         }
     }
@@ -410,7 +410,7 @@ void main(void)
 
         /* We wait until HDD spins up to check for hold button */
         if (button_hold()) {
-            fw = FW_APPLE;
+//            fw = FW_APPLE;
             printf("Executing OF...");
             ata_sleepnow();
             rc = kernel_launch_onb();
diff --git a/firmware/drivers/rtc/rtc_e8564.c b/firmware/drivers/rtc/rtc_e8564.c
index ee2449ffb8..4bb61410db 100644
--- a/firmware/drivers/rtc/rtc_e8564.c
+++ b/firmware/drivers/rtc/rtc_e8564.c
@@ -226,7 +226,7 @@ bool rtc_check_alarm_flag(void)
 
     /* read Control 2 register which contains alarm flag */
     rv = i2c_readbytes(RTC_ADDR, RTC_CTRL2, 1, &tmp);
-
+    (void)rv;
     return (tmp & RTC_AF);
 }
 #endif /* HAVE_RTC_ALARM */
diff --git a/firmware/target/arm/pbell/vibe500/button-vibe500.c b/firmware/target/arm/pbell/vibe500/button-vibe500.c
index 9afc9eecab..1279e86725 100644
--- a/firmware/target/arm/pbell/vibe500/button-vibe500.c
+++ b/firmware/target/arm/pbell/vibe500/button-vibe500.c
@@ -97,9 +97,11 @@ int button_read_device(void)
     int buttons = int_btn;
     unsigned char state;
     static bool hold_button = false;
+#ifndef BOOTLOADER
     bool hold_button_old;
 
     hold_button_old = hold_button;
+#endif
     hold_button = button_hold();
 
 #ifndef BOOTLOADER
diff --git a/firmware/target/arm/samsung/button-yh82x_yh92x.c b/firmware/target/arm/samsung/button-yh82x_yh92x.c
index ff8a580d2a..7d0f390644 100644
--- a/firmware/target/arm/samsung/button-yh82x_yh92x.c
+++ b/firmware/target/arm/samsung/button-yh82x_yh92x.c
@@ -103,10 +103,14 @@ int button_read_device(void)
     int btn = BUTTON_NONE;
 #endif /* (SAMSUNG_YH920) || (SAMSUNG_YH925) */
     static bool hold_button = false;
+#ifndef BOOTLOADER
     bool hold_button_old;
+#endif
 
     /* Hold */
+#ifndef BOOTLOADER
     hold_button_old = hold_button;
+#endif
     hold_button = button_hold();
 
 #ifndef BOOTLOADER
diff --git a/firmware/target/arm/usb-drv-arc.c b/firmware/target/arm/usb-drv-arc.c
index 44d006b30f..b19b635923 100644
--- a/firmware/target/arm/usb-drv-arc.c
+++ b/firmware/target/arm/usb-drv-arc.c
@@ -352,12 +352,16 @@ static struct queue_head qh_array[USB_NUM_ENDPOINTS*2]
 static struct semaphore transfer_completion_signal[USB_NUM_ENDPOINTS*2]
     SHAREDBSS_ATTR;
 
-static const unsigned int pipe2mask[] = {
+static const unsigned int pipe2mask[USB_NUM_ENDPOINTS*2] = {
     0x01, 0x010000,
     0x02, 0x020000,
     0x04, 0x040000,
+#if USB_NUM_ENDPOINTS > 3
     0x08, 0x080000,
+#endif
+#if USB_NUM_ENDPOINTS > 4
     0x10, 0x100000,
+#endif
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/firmware/target/coldfire/iaudio/m3/button-m3.c b/firmware/target/coldfire/iaudio/m3/button-m3.c
index 53d02ec449..1c7f4a15de 100644
--- a/firmware/target/coldfire/iaudio/m3/button-m3.c
+++ b/firmware/target/coldfire/iaudio/m3/button-m3.c
@@ -50,15 +50,11 @@ int button_read_device(void)
 {
     int  btn = BUTTON_NONE;
 #ifndef BOOTLOADER
-    bool hold_button_old;
     bool remote_hold_button_old;
 #endif
     int  data;
 
     /* normal buttons */
-#ifndef BOOTLOADER
-    hold_button_old = hold_button;
-#endif
     hold_button = button_hold();
 
     if (!hold_button)
diff --git a/firmware/target/coldfire/iriver/h100/button-h100.c b/firmware/target/coldfire/iriver/h100/button-h100.c
index dbaefdcf2a..63f772b65e 100644
--- a/firmware/target/coldfire/iriver/h100/button-h100.c
+++ b/firmware/target/coldfire/iriver/h100/button-h100.c
@@ -40,7 +40,7 @@ bool button_hold(void)
 }
 
 static bool remote_button_hold_only(void)
-{        
+{
     if(remote_type() == REMOTETYPE_H300_NONLCD)
         return adc_scan(ADC_REMOTE)<0x0d; /* hold should be 0x00 */
     else
@@ -68,14 +68,17 @@ int button_read_device(void)
     static bool remote_hold_button = false;
     static int prev_data = 0xff;
     static int last_valid = 0xff;
+#ifndef BOOTLOADER
     bool hold_button_old;
     bool remote_hold_button_old;
+#endif
 
     /* normal buttons */
+#ifndef BOOTLOADER
     hold_button_old = hold_button;
+#endif
     hold_button = button_hold();
-    
-    
+
 #ifndef BOOTLOADER
     if (hold_button != hold_button_old)
         backlight_hold_changed(hold_button);
@@ -120,7 +123,9 @@ int button_read_device(void)
     }
 
     /* remote buttons */
+#ifndef BOOTLOADER
     remote_hold_button_old = remote_hold_button;
+#endif
     remote_hold_button = remote_button_hold_only();
 
 #ifndef BOOTLOADER
diff --git a/firmware/target/coldfire/iriver/h300/button-h300.c b/firmware/target/coldfire/iriver/h300/button-h300.c
index 74c14fb144..437c9fd2d3 100644
--- a/firmware/target/coldfire/iriver/h300/button-h300.c
+++ b/firmware/target/coldfire/iriver/h300/button-h300.c
@@ -84,14 +84,17 @@ int button_read_device(void)
     static bool remote_hold_button = false;
     static int prev_data = 0xff;
     static int last_valid = 0xff;
+#ifndef BOOTLOADER
     bool hold_button_old;
     bool remote_hold_button_old;
+#endif
 
     /* normal buttons */
+#ifndef BOOTLOADER
     hold_button_old = hold_button;
+#endif
     hold_button = button_hold();
-    
-    
+
 #ifndef BOOTLOADER
     if (hold_button != hold_button_old)
         backlight_hold_changed(hold_button);
@@ -130,7 +133,9 @@ int button_read_device(void)
     }
 
     /* remote buttons */
+#ifndef BOOTLOADER
     remote_hold_button_old = remote_hold_button;
+#endif
     remote_hold_button = remote_button_hold_only();
 
 #ifndef BOOTLOADER
diff --git a/firmware/target/coldfire/mpio/ata-mpio.c b/firmware/target/coldfire/mpio/ata-mpio.c
index af082640bf..94a572a0e8 100644
--- a/firmware/target/coldfire/mpio/ata-mpio.c
+++ b/firmware/target/coldfire/mpio/ata-mpio.c
@@ -39,7 +39,9 @@ void ata_reset(void)
 
 void ata_enable(bool on)
 {
+#ifndef BOOTLOADER
     static bool init = true;
+#endif
 
     /* Ide power toggling is a nasty hack to allow USB bridge operation
      * in rockbox. For some reason GL811E bridge doesn't like the state
@@ -59,8 +61,8 @@ void ata_enable(bool on)
             sleep(1);
             ide_power_enable(true);
         }
-#endif
         init = false;
+#endif
     }
     else
     {
diff --git a/firmware/target/coldfire/mpio/hd200/button-hd200.c b/firmware/target/coldfire/mpio/hd200/button-hd200.c
index 27b0d50fb5..5ff70783cd 100644
--- a/firmware/target/coldfire/mpio/hd200/button-hd200.c
+++ b/firmware/target/coldfire/mpio/hd200/button-hd200.c
@@ -69,17 +69,21 @@ int button_read_device(void)
     static bool hold_button = false;
     bool remote_hold_button = false;
 
+#ifndef BOOTLOADER
     bool hold_button_old;
+#endif
     bool remote_present;
 
     /* check if we have remote connected */
     remote_present = remote_detect();
 
     /* read hold buttons status */
+#ifndef BOOTLOADER
     hold_button_old = hold_button;
+#endif
     hold_button = button_hold();
     remote_hold_button = remote_button_hold();
-    
+
 #ifndef BOOTLOADER
     /* Only main hold affects backlight */
     if (hold_button != hold_button_old)