diff --git a/firmware/firmware.asm b/firmware/firmware.asm
index 7d18ed4..3bc7b54 100644
--- a/firmware/firmware.asm
+++ b/firmware/firmware.asm
@@ -1562,7 +1562,7 @@ rotp    call    readat0               ; read 512 bytes of entries (16 entries)
         jr      z, saba               ; if found ($20) or EOF ($00), exit
         djnz    rotp
 erfnf   ld      ix, cad78
-terror jp      ferror
+terror  jp      ferror
 saba
       IF version=4
         sub     $31
@@ -1609,7 +1609,9 @@ bucop   push    hl                    ; save current cluster
         inc     a                     ; cluster==FFFF
         pop     ix
         jr      nz, bucop
-enbur   ld      ix, cad79
+enbur   ld      bc, $090a
+        ld      ix, cad785
+        call_prnstr
         jr      terror
 fat32   ld      hl, (tmpbu2+$24)      ; Logical sectors per FAT
         add     hl, hl
diff --git a/firmware/strings.asm b/firmware/strings.asm
index c259335..715663d 100644
--- a/firmware/strings.asm
+++ b/firmware/strings.asm
@@ -1,6 +1,6 @@
 cad0    defb    'Core:             ',0
 cad1    defm    'http://zxuno.speccy.org', 0
-        defm    'ZX-Uno BIOS v0.50', 0
+        defm    'ZX-Uno BIOS v0.51', 0
         defm    'Copyleft ', 127, ' 2016 ZX-Uno Team', 0
         defm    'Processor: Z80 3.5MHz', 0
         defm    'Memory:    512K Ok', 0
@@ -37,7 +37,7 @@ cad8    defm    $10, '                         ', $10, '              ', $10, 0
 cad9    defb    $14, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11
         defb    $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $18, $11
         defb    $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $15, 0
-        defb    '   BIOS v0.50    ', $7f, '2016 ZX-Uno Team', 0
+        defb    '   BIOS v0.51    ', $7f, '2016 ZX-Uno Team', 0
       IF  recovery=0
 cad10   defb    'Hardware tests', 0
         defb    $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11, $11
@@ -280,6 +280,7 @@ cad75   defb    'Insert SD with', 0
 cad76   defb    'Be quiet, avoid brick', 0
 cad77   defb    'SD or partition error', 0
 cad78   defb    'Not found or bad size', 0
+cad785  defb    'Status:[ooooooooooo]', 0
 cad79   defb    ' Successfully burned ', 0
 cad80   defb    'EAR input', 0
 cad81   defb    'SD file', 0