diff --git a/crc32/Makefile b/crc32/Makefile
index 7b7ed10..2f05384 100644
--- a/crc32/Makefile
+++ b/crc32/Makefile
@@ -1,8 +1,9 @@
 # Makefile -- sign32
-# Copyright (c) 2021 Renaud Fivet
+# Copyright (c) 2021-2025 Renaud Fivet
 
 # silence unused parameter warning
 WARNINGS=-pedantic -Wall -Wextra -Wstrict-prototypes -Wno-unused-parameter
 CFLAGS = $(WARNINGS) -O2
+LDFLAGS = -s
 
 all: sign32
diff --git a/dht11main.c b/dht11main.c
index 3137730..b769dd0 100644
--- a/dht11main.c
+++ b/dht11main.c
@@ -1,12 +1,12 @@
 /* dht11main.c -- sample DHT11 sensor   */
-/* Copyright (c) 2020-2021 Renaud Fivet */
+/* Copyright (c) 2020-2023 Renaud Fivet */
 #include <stdio.h>
 
 #include "system.h"
 #include "dht11.h"
 
 int main( void) {
-    static unsigned last ;
+    unsigned last = 0 ;
 
     dht11_init() ;
     for( ;;)
@@ -17,7 +17,8 @@ int main( void) {
             if( 2 == (last % 5))    /* every 5 seconds starting 2s after boot */
                 switch( dht11_read()) {
                 case DHT11_SUCCESS:
-                    printf( "%u%%RH, %d.%uC\n", dht11_humid, dht11_tempc, dht11_tempf) ;
+                    printf( "%u%%RH, %d.%uC\n", dht11_humid, dht11_tempc,
+                                                                dht11_tempf) ;
                     break ;
                 case DHT11_FAIL_TOUT:
                     puts( "Timeout") ;
diff --git a/docs/25_prototype.html b/docs/25_prototype.html
index e0f5dc3..1eb66e6 100644
--- a/docs/25_prototype.html
+++ b/docs/25_prototype.html
@@ -71,7 +71,7 @@ void kputu( unsigned u) {
 }
 
 int main( void) {
-    static unsigned last ;
+    unsigned last = 0 ;
 
     for( ;;)
         if( last != uptime) {
diff --git a/docs/26_uptime.html b/docs/26_uptime.html
index 8ee60b6..c50ee50 100644
--- a/docs/26_uptime.html
+++ b/docs/26_uptime.html
@@ -195,7 +195,7 @@ static void display( unsigned u, const char *s) {
 }
 
 int main( void) {
-    static unsigned last ;
+    unsigned last = 0 ;
 
     for( ;;)
         if( last != uptime) {
@@ -284,7 +284,7 @@ The build now complete successfully.
 $ make
 f030f4.elf
    text    data     bss     dec     hex filename
-   1325       0      12    1337     539 f030f4.elf
+   1317       0       8    1325     52d f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
diff --git a/docs/27_library.html b/docs/27_library.html
index ff68812..67b216d 100644
--- a/docs/27_library.html
+++ b/docs/27_library.html
@@ -88,7 +88,7 @@ Build terminates successfully producing the same executable as before.
 $ make
 f030f4.elf from startup.o uplow.2.o uptime.o
    text    data     bss     dec     hex filename
-   1325       0      12    1337     539 f030f4.elf
+   1317       0       8    1325     52d f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
diff --git a/docs/28_clocks.html b/docs/28_clocks.html
index c112bab..f5adc29 100644
--- a/docs/28_clocks.html
+++ b/docs/28_clocks.html
@@ -310,7 +310,7 @@ Build complete successfully, this is for PLL HSE board configuration.
 $ make
 f030f4.elf from startup.o clocks.o uptime.o
    text    data     bss     dec     hex filename
-   1441       0      12    1453     5ad f030f4.elf
+   1433       0       8    1441     5a1 f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
diff --git a/docs/29_interrupt.html b/docs/29_interrupt.html
index 67ad248..26e42c9 100644
--- a/docs/29_interrupt.html
+++ b/docs/29_interrupt.html
@@ -246,7 +246,7 @@ Build completes successfully
 $ make
 f030f4.elf from startup.txeie.o txeie.o uptime.o
    text    data     bss     dec     hex filename
-   1641       0      20    1661     67d f030f4.elf
+   1633       0      16    1649     671 f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
diff --git a/docs/31_dht11.html b/docs/31_dht11.html
index ce441c6..87dbae7 100644
--- a/docs/31_dht11.html
+++ b/docs/31_dht11.html
@@ -220,7 +220,7 @@ Based on this API, I write <b>dht11main.c</b>.
 #include "dht11.h"
 
 int main() {
-    static unsigned last ;
+    unsigned last = 0 ;
 
     dht11_init() ;
     for( ;;)
@@ -408,7 +408,7 @@ Build completes successfully
 $ make
 f030f4.elf from startup.txeie.o gpioa.o dht11main.o dht11.o
    text    data     bss     dec     hex filename
-   1877       0      24    1901     76d f030f4.elf
+   1861       0      20    1881     759 f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
@@ -429,6 +429,6 @@ can read the values reported by the DHT11 sensor.
 <a href="32_errata.html">Next</a>, I will investigate if the values read are
 correct.
 
-    <hr>© 2020-2024 Renaud Fivet
+    <hr>© 2020-2025 Renaud Fivet
  </body>
 </html>
diff --git a/docs/34_adcvnt.html b/docs/34_adcvnt.html
index f9330ad..8960ac5 100644
--- a/docs/34_adcvnt.html
+++ b/docs/34_adcvnt.html
@@ -340,7 +340,7 @@ adc.c:232:3: warning: #warning HCLK is not multiple of 8 MHz [-Wcpp]
       |   ^~~~~~~
 f030f4.elf from startup.txeie.o adc.o adcmain.o
    text    data     bss     dec     hex filename
-   2464       0      16    2480     9b0 f030f4.elf
+   2408       0      16    2424     978 f030f4.elf
 f030f4.hex
 f030f4.bin
 </pre>
@@ -366,6 +366,6 @@ point measured in factory for the STM32F030 family members.
 means taking two measurements as far apart as possible in the working range I
 want to use.
 
-    <hr>© 2020-2024 Renaud Fivet
+    <hr>© 2020-2025 Renaud Fivet
  </body>
 </html>
diff --git a/docs/36_update.html b/docs/36_update.html
index 839f1ab..cb4e19b 100644
--- a/docs/36_update.html
+++ b/docs/36_update.html
@@ -130,7 +130,7 @@ environment in use (Cygwin, MSYS2 and other).
 ifeq (linux, $(findstring linux, $(MAKE_HOST)))
  INSTALLDIR = $(HOME)/Packages
 #REVDIR = gcc-arm-none-eabi-10-2020-q4-major
- REVDIR = arm-gnu-toolchain-13.3.rel1-x86_64-arm-none-eabi
+ REVDIR = arm-gnu-toolchain-14.2.rel1-x86_64-arm-none-eabi
 else
  DRIVE = d
 ifeq (cygwin, $(findstring cygwin, $(MAKE_HOST)))
@@ -142,7 +142,7 @@ else
 endif
  INSTALLDIR = $(OSDRIVE)/Program Files (x86)
 #REVDIR = GNU Arm Embedded Toolchain/10 2020-q4-major
- REVDIR = GNU Arm Embedded Toolchain/arm-gnu-toolchain-13.3.rel1-mingw-w64-i686-arm-none-eabi
+ REVDIR = GNU Arm Embedded Toolchain/arm-gnu-toolchain-14.2.rel1-mingw-w64-i686-arm-none-eabi
 endif
 
 GCCDIR = $(INSTALLDIR)/$(REVDIR)
@@ -174,6 +174,6 @@ changes.
 <a href="37_inram.html">Next</a>, I will (re)build to execute code in RAM
 instead of FLASH.
 
-    <hr>© 2020-2024 Renaud Fivet
+    <hr>© 2020-2025 Renaud Fivet
  </body>
 </html>
diff --git a/docs/37_inram.html b/docs/37_inram.html
index 1a301ed..ca24992 100644
--- a/docs/37_inram.html
+++ b/docs/37_inram.html
@@ -384,7 +384,7 @@ ledtick.elf: ledtick.o
 cstartup.elf: cstartup.o
 
 %.elf:
-    @echo $@
+    @echo $@ from $+
     $(CC) $(CPU) -T$(LD_SCRIPT) $(LDFLAGS) -nostartfiles -o $@ $+
     $(SIZE) $@
     $(OBJDUMP) -hS $@ > $(subst .elf,.lst,$@)
@@ -397,15 +397,26 @@ The projects composition need to be updated to use the new startup.
 Finally, to keep track of the memory model and the load location, I put
 the load address in the name of the binary file generated.
 
-<pre>all: $(PROJECT).$(BINLOC).bin $(PROJECT).hex</pre>
+<pre>all: $(PROJECT).hex $(PROJECT).$(BINLOC).bin</pre>
+
+With the corresponding rule
+
+<pre>
+%.$(BINLOC).bin: %.elf
+    @echo $@
+    $(OBJCOPY) -O binary $< $@
+</pre>
 
 This way if I build uptime prototype in GORAM memory model
 
 <pre>
 $ make
-f030f4.elf
+f030f4.elf from startup.ram.o txeie.o uptime.1.o libstm32.a
+Memory region         Used Size  Region Size  %age Used
+           FLASH:        1163 B         2 KB     56.79%
+             RAM:         208 B         2 KB     10.16%
    text    data     bss     dec     hex filename
-   1164       0      20    1184     4a0 f030f4.elf
+   1163       0     208    1371     55b f030f4.elf
 f030f4.hex
 f030f4.0x20000800.bin
 </pre>
@@ -419,19 +430,18 @@ $ stm32flash -g 0x20000800
 
 <h2>Caveat: stm32flash v0.6 intel hex bug</h2>
 
-At the time of writing, <b>stm32flash</b> v0.6 has a bug that prevents
-writing intel hex files correctly at address other than the origin of
-the Flash. A bug fix and the possibility to directly read the base
-address from the intel hex file are planned to be included in v0.7.
+<b>stm32flash</b> v0.6 had a bug that prevents writing intel hex files
+correctly at address other than the origin of the Flash. A bug fix and the
+possibility to directly read the base address from the intel hex file was
+merged in v0.7.
 <p>
-Until v0.7 is out, I am using my own patched version of stm32flash or
-the binary files when I need to test GOFLASH and GORAM memory models.
-<p>
-As I branched off my own patched version of <b>stm32flash</b>, I added a
+I have branched off my own patched version of <b>stm32flash</b>, I added a
 <code>-x</code> option to write and execute an intel hex file:
 
 <pre>stm32flash -x file.hex COM#</pre>
 
+This patch is scheduled to be merged in v0.8.
+
 <h2>Testing</h2>
 
 I build all four memory models and check that they can be loaded and
@@ -448,6 +458,6 @@ GORAM with <b>STM32 Cube Programmer</b>.
 <a href="38_crc32.html">Next</a>, I will add integrity check at startup by
 doing CRC32 validation of the code.
 
-    <hr>© 2020-2024 Renaud Fivet
+    <hr>© 2020-2025 Renaud Fivet
  </body>
 </html>
diff --git a/uptime.1.c b/uptime.1.c
index 1b351c2..357026f 100644
--- a/uptime.1.c
+++ b/uptime.1.c
@@ -1,5 +1,5 @@
 /* uptime.1.c -- tells how long the system has been running
-** Copyright (c) 2020 Renaud Fivet
+** Copyright (c) 2020-2023 Renaud Fivet
 **
 ** v1 displays the number of seconds elapsed since boot
 */
@@ -19,7 +19,7 @@ void kputu( unsigned u) {
 }
 
 int main( void) {
-    static unsigned last ;
+    unsigned last = 0 ;
 
     for( ;;)
         if( last != uptime) {
diff --git a/uptime.c b/uptime.c
index 1b8e8fe..14e8302 100644
--- a/uptime.c
+++ b/uptime.c
@@ -1,5 +1,5 @@
 /* uptime.c -- tells how long the system has been running   */
-/* Copyright (c) 2020 Renaud Fivet                          */
+/* Copyright (c) 2020-2023 Renaud Fivet                     */
 
 #include <stdio.h>
 #include "system.h" /* uptime, yield() */