diff --git a/cores/Spectrum/bootloader_hex.txt b/cores/Spectrum/bootloader_hex.txt
index f93aa83..0238f58 100644
--- a/cores/Spectrum/bootloader_hex.txt
+++ b/cores/Spectrum/bootloader_hex.txt
@@ -1,28 +1,7 @@
 F3
-EF
-06
-10
-EF
-0B
-C0
-EF
-03
-01
 31
-EC
+BB
 BF
-AF
-EF
-01
-08
-EF
-03
-00
-EF
-02
-03
-ED
-79
 11
 61
 C7
@@ -30,14 +9,35 @@ D5
 11
 80
 ED
-D5
-39
-ED
-59
-ED
-79
+EF
+06
+10
 18
-13
+04
+DF
+20
+05
+C9
+DB
+1F
+18
+1B
+3E
+16
+3D
+20
+FD
+04
+C8
+DB
+FE
+A9
+E6
+40
+28
+F7
+18
+43
 01
 3B
 FD
@@ -49,71 +49,76 @@ FE
 ED
 A3
 E9
-05
-ED
-61
-04
-C9
+EF
+0B
+C0
+18
+03
 C3
 43
 C0
+D5
+EF
+03
+01
+EF
+01
+08
+EF
+03
+00
+EF
+02
+03
+A1
+ED
+61
+ED
+59
+ED
+61
+39
 ED
 A2
 04
 BC
 38
 FA
+EF
+0B
+00
 05
 ED
 61
-DB
-1F
-A1
+04
 FE
 18
 11
-E9
+B8
 BF
+D5
+C0
 18
-1D
-DF
-C8
-3E
-16
-3D
-20
-FD
-04
-C8
-DB
-FE
-1F
-A9
-E6
-20
-28
-F6
-79
-EE
-27
-4F
-D3
-FE
-C9
+0C
 C3
 40
 C0
 ED
 45
-D5
-C0
+79
+EE
+47
+4F
+D3
+FE
+C9
 11
 53
 00
 DD
 63
 CD
-7C
+81
 00
 DD
 21
diff --git a/cores/Spectrum/pines_zxuno_v4.ucf b/cores/Spectrum/pines_zxuno_v4.ucf
index f9deacc..534c557 100644
--- a/cores/Spectrum/pines_zxuno_v4.ucf
+++ b/cores/Spectrum/pines_zxuno_v4.ucf
@@ -67,8 +67,8 @@ NET "flash_cs_n"      LOC="P38"  | IOSTANDARD = LVCMOS33;
 NET "flash_clk"       LOC="P70"  | IOSTANDARD = LVCMOS33;
 NET "flash_mosi"      LOC="P64"  | IOSTANDARD = LVCMOS33;
 NET "flash_miso"      LOC="P65"  | IOSTANDARD = LVCMOS33;
-#NET "flash_ext1"      LOC="P62"  | IOSTANDARD = LVCMOS33;
-#NET "flash_ext2"      LOC="P61"  | IOSTANDARD = LVCMOS33;
+NET "flash_ext1"      LOC="P62"  | IOSTANDARD = LVCMOS33;
+NET "flash_ext2"      LOC="P61"  | IOSTANDARD = LVCMOS33;
 
 # SD/MMC
 NET "sd_cs_n"         LOC="P59"  | IOSTANDARD = LVCMOS33;
diff --git a/cores/Spectrum/tld_zxuno.v b/cores/Spectrum/tld_zxuno.v
index 2c1ee34..cb1005a 100644
--- a/cores/Spectrum/tld_zxuno.v
+++ b/cores/Spectrum/tld_zxuno.v
@@ -38,6 +38,8 @@ module tld_zxuno (
    output wire audio_out_right,
    output wire stdn,
    output wire stdnb,
+   output wire flash_ext1,
+   output wire flash_ext2,
    
    output wire [20:0] sram_addr,
    inout wire [7:0] sram_data,
@@ -68,7 +70,9 @@ module tld_zxuno (
 
    assign stdn = 1'b0;  // fijar norma PAL
    assign stdnb = 1'b1; // y conectamos reloj PAL
-   
+   assign flash_ext1 = 1'b1;
+   assign flash_ext2 = 1'b1;
+
    assign sram_addr[19] = 1'b0;
    assign sram_addr[20] = 1'b0;