diff --git a/firmware/FIRMWARE.ZX1 b/firmware/FIRMWARE.ZX1
index 749cd31..8de6254 100644
Binary files a/firmware/FIRMWARE.ZX1 and b/firmware/FIRMWARE.ZX1 differ
diff --git a/firmware/firmloader.bat b/firmware/firmloader.bat
index 4254081..3807e56 100644
--- a/firmware/firmloader.bat
+++ b/firmware/firmloader.bat
@@ -1,5 +1,5 @@
 sjasmplus firmware.asm
 zx7b firmware_strings.rom firmware.rom.zx7b 
-sjasmplus firmloader.asm
-bin2hex firmloader.rom
-copy /y firmloader.hex ..\cores\Spectrum\firmloader_hex.txt
\ No newline at end of file
+sjasmplus bootloader.asm
+bin2hex bootloader.rom
+copy /y bootloader.hex ..\cores\Spectrum\bootloader_hex.txt
\ No newline at end of file
diff --git a/firmware/firmware.asm b/firmware/firmware.asm
index 3ccebb7..cb51413 100644
--- a/firmware/firmware.asm
+++ b/firmware/firmware.asm
@@ -536,7 +536,9 @@ star21  wreg    flash_cs, 0     ; activamos spi, enviando un 0
         in      a, (c)
         wreg    flash_cs, 1     ; desactivamos spi, enviando un 1
         and     2
+      IF  zesarux=0
         jr      z, star21
+      ENDIF
         xor     a
     ENDIF
 
@@ -1945,7 +1947,18 @@ roms27  ld      hl, $0104
 
 ;*** Upgrade Menu ***
 ;*********************
-upgra   ld      bc, (menuop)
+upgra 
+      IF  recovery=1
+        ld      ix, cad117
+        ex      af, af'
+        call    prnhel
+upgra0  in      a, ($1f)
+        jr      nz, upgra0
+        ld      de, $0401
+        ld      a, %01111001    ; fondo blanco tinta azul
+        ld      l, 0
+      ENDIF
+        ld      bc, (menuop)
       IF  vertical=0
         ld      h, 16
         dec     c
@@ -2051,8 +2064,8 @@ upgr34  ld      (hl), a
       ENDIF
         jr      z, upgr35
         inc     a
-        ld      (ix-4), cad117 & $ff
-        ld      (ix-3), cad117 >> 8
+        ld      (ix-4), cad119 & $ff
+        ld      (ix-3), cad119 >> 8
         call    deixl1
 upgr35  ld      (ix-3), $ff
         dec     a
diff --git a/firmware/header.bin b/firmware/header.bin
index d178650..15b9384 100644
Binary files a/firmware/header.bin and b/firmware/header.bin differ
diff --git a/firmware/make.bat b/firmware/make.bat
index aa492b9..0a73493 100644
--- a/firmware/make.bat
+++ b/firmware/make.bat
@@ -5,6 +5,7 @@ fcut      firmware_strings.rom  7e00 -7e00  strings.bin
 zx7b      strings.bin           strings.bin.zx7b
 sjasmplus firmware.asm
 fcut      firmware_strings.rom  0000  4000  firmware.rom
+copy /y firmware.rom FIRMWARE.ZX1
 rem GenRom sm12 BIOS firmware.rom firm.TAP
 rem cgleches firm.tap firm.wav 3
 rem firm.wav
diff --git a/firmware/strings.asm b/firmware/strings.asm
index fe1835c..982d7f9 100644
--- a/firmware/strings.asm
+++ b/firmware/strings.asm
@@ -406,7 +406,9 @@ cad116  defb    'Disable for', 0
         defb    'better compa-', 0
         defb    'tibility with', 0
         defb    'old games', 0, 0
-cad117  defb    ' Add new core', 0
+cad117  defb    'Remove jumpers', 0
+        defb    'to continue', 0, 0
+cad119  defb    ' Add new core', 0
 
 ;cad199  defb    'af0000 bc0000 de0000 hl0000 sp0000 ix0000 iy0000', 0