diff --git a/F3:F303/Multistepper/commonproto.c b/F3:F303/Multistepper/commonproto.c
index 169c51c..562dfae 100644
--- a/F3:F303/Multistepper/commonproto.c
+++ b/F3:F303/Multistepper/commonproto.c
@@ -236,6 +236,7 @@ errcodes cu_mcuvdd(uint8_t par, int32_t *val){
 
 errcodes cu_microsteps(uint8_t _U_ par, int32_t _U_ *val){
     uint8_t n; CHECKN(n, par);
+    USB_sendstr("===> val="); printi(*val); newline();
     if(ISSETTER(par)){
 #if MICROSTEPSMAX > 512
 #error "Change the code anywhere!"
@@ -270,7 +271,7 @@ errcodes cu_minspeed(uint8_t _U_ par, int32_t _U_ *val){
 errcodes cu_motcurrent(uint8_t par, int32_t *val){
     uint8_t n; CHECKN(n, par);
     if(ISSETTER(par)){
-        if(*val < 1 || *val > 32) return ERR_BADVAL;
+        if(*val < 0 || *val > 31) return ERR_BADVAL;
         the_conf.motcurrent[n] = *val;
         motflags_t *f = the_conf.motflags;
         if(f->drvtype == DRVTYPE_UART){
diff --git a/F3:F303/Multistepper/main.c b/F3:F303/Multistepper/main.c
index 86aaa0c..6fa117f 100644
--- a/F3:F303/Multistepper/main.c
+++ b/F3:F303/Multistepper/main.c
@@ -51,10 +51,6 @@ int main(void){
     adc_setup();
     pdnuart_setup();
     USBPU_ON();
-    for(int i = 0; i < MOTORSNO; ++i){
-        motflags_t flag = the_conf.motflags[i];
-        if(flag.drvtype == DRVTYPE_UART) pdnuart_init(i);
-    }
     uint32_t ctr = 0;
     CAN_message *can_mesg;
     while(1){
diff --git a/F3:F303/Multistepper/multistepper.bin b/F3:F303/Multistepper/multistepper.bin
index 0fc5ae4..5ed070a 100755
Binary files a/F3:F303/Multistepper/multistepper.bin and b/F3:F303/Multistepper/multistepper.bin differ
diff --git a/F3:F303/Multistepper/pdnuart.c b/F3:F303/Multistepper/pdnuart.c
index e510f9e..c1e5686 100644
--- a/F3:F303/Multistepper/pdnuart.c
+++ b/F3:F303/Multistepper/pdnuart.c
@@ -120,8 +120,8 @@ int pdnuart_readreg(uint8_t reg, uint32_t *data){
     }
     uint32_t o = 0;
     for(int i = 3; i < 7; ++i){
-        o |= buf[i];
         o <<= 8;
+        o |= buf[i];
     }
     *data = o;
     return TRUE;
@@ -165,7 +165,7 @@ int pdnuart_microsteps(uint8_t no, uint32_t val){
     TMC2209_chopconf_reg_t regval;
     if(!readregister(no, TMC2209Reg_CHOPCONF, &regval.value)) return FALSE;
     if(val == 256) regval.mres = 0;
-    else regval.mres = MSB(val) + 1;
+    else regval.mres = 8 - MSB(val);
     return writeregister(no, TMC2209Reg_CHOPCONF, regval.value);
 }
 
diff --git a/F3:F303/Multistepper/steppers.c b/F3:F303/Multistepper/steppers.c
index 53a9487..da82221 100644
--- a/F3:F303/Multistepper/steppers.c
+++ b/F3:F303/Multistepper/steppers.c
@@ -18,6 +18,7 @@
 
 #include "flash.h"
 #include "hardware.h"
+#include "pdnuart.h"
 #include "proto.h"
 #include "steppers.h"
 #include "strfunc.h"
@@ -82,6 +83,13 @@ void update_stepper(uint8_t i){
     accdecsteps[i] = (the_conf.maxspd[i] * the_conf.maxspd[i]) / the_conf.accel[i] / 2;
     ustepsshift[i] = MSB(the_conf.microsteps[i]);
     ESW_reaction[i] = the_conf.ESW_reaction[i];
+    switch(the_conf.motflags[i].drvtype){
+        case DRVTYPE_UART:
+            pdnuart_init(i);
+        break;
+        default:
+        break;
+    }
 }
 
 // run this function after each steppers parameters changing
diff --git a/F3:F303/Multistepper/version.inc b/F3:F303/Multistepper/version.inc
index 29c91ef..79833d0 100644
--- a/F3:F303/Multistepper/version.inc
+++ b/F3:F303/Multistepper/version.inc
@@ -1,2 +1,2 @@
-#define BUILD_NUMBER "95"
-#define BUILD_DATE "2023-03-01"
+#define BUILD_NUMBER "104"
+#define BUILD_DATE "2023-03-02"