diff --git a/avr/devices/n12/n12_boot.asm b/avr/devices/n12/n12_boot.asm
index bb1428e..c5fd806 100644
--- a/avr/devices/n12/n12_boot.asm
+++ b/avr/devices/n12/n12_boot.asm
@@ -6,17 +6,6 @@
 ; All definitions and changes should go into this file.
 ;
 ;
-;                                 AtTiny84
-;                                 --------
-;                            VCC  1     14  GND
-;                            PB0  2     13  PA0
-;                            PB1  3     12  PA1  COM-DATA
-;                  /RESET    PB3  4     11  PA2
-;                  KEY1      PB2  5     10  PA3  LED
-;                  COM_ATTN  PA7  6      9  PA4
-;                            PA6  7      8  PA5
-;                                 --------
-;
 ; ***************************************************************************
 
 
@@ -65,15 +54,15 @@
 .equ COM_DDR_DATA        = DDRA
 .equ COM_PORT_DATA       = PORTA
 .equ COM_PIN_DATA        = PINA
-.equ COM_PINNUM_DATA     = PORTA1
+.equ COM_PINNUM_DATA     = PORTA0
 
 .equ COM_DDR_ATTN        = DDRA
 .equ COM_PORT_ATTN       = PORTA
 .equ COM_PIN_ATTN        = PINA
-.equ COM_PINNUM_ATTN     = PORTA7
+.equ COM_PINNUM_ATTN     = PORTA1
 
 .equ COM_IRQ_ADDR_ATTN   = PCMSK0
-.equ COM_IRQ_BIT_ATTN    = 7              ; bit 7 in PCMSK0
+.equ COM_IRQ_BIT_ATTN    = 1              ; bit 1 in PCMSK0
 .equ COM_IRQ_GIFR_ATTN   = PCIF0
 .equ COM_IRQ_GIMSK_ATTN  = PCIE0
 
@@ -81,7 +70,7 @@
 .equ LED_DDR             = DDRA
 .equ LED_PORT            = PORTA
 .equ LED_PIN             = PINA
-.equ LED_PINNUM          = PORTA3
+.equ LED_PINNUM          = PORTA7
 
 
 ; ***************************************************************************
@@ -114,9 +103,11 @@
   reti ; USI_OVF
 
 
-firmwareType:    .dw FW_TYPE
-firmwareVersion: .dw FW_VERSION
-firmwareModules: .dw 0
+devInfoBlock:
+devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
+devInfoId:           .db 'N', 0
+devInfoVersion:      .db 11, 0                 ; version, revision
+
 firmwareStart:   rjmp main ; will be overwritten when flashing
 
 
@@ -142,6 +133,8 @@ main:
 .include "modules/com2/packets.asm"
 .include "common/crc8.asm"
 .include "common/utils_wait_fixed.asm"
+.include "common/utils_copy_from_flash.asm"
+.include "common/utils_copy_sdram.asm"
 .include "modules/flash/bootloader.asm"
 .include "modules/flash/flash.asm"
 .include "modules/flash/recv.asm"
diff --git a/avr/devices/n12/n12_defs.asm b/avr/devices/n12/n12_defs.asm
index 7404c12..4b864db 100644
--- a/avr/devices/n12/n12_defs.asm
+++ b/avr/devices/n12/n12_defs.asm
@@ -1,5 +1,5 @@
 ; ***************************************************************************
-; copyright   : (C) 2023 by Martin Preuss
+; copyright   : (C) 2024 by Martin Preuss
 ; email       : martin@libchipcard.de
 ;
 ; ***************************************************************************
@@ -7,6 +7,21 @@
 ; * Please see toplevel file COPYING of that project for license details.   *
 ; ***************************************************************************
 
+; ***************************************************************************
+;
+;                                 AtTiny84
+;                                 --------
+;                            VCC  1     14  GND
+;          [PCINT8] REED_IN1 PB0  2     13  PA0  COM-DATA
+;          [PCINT9] REED_IN2 PB1  3     12  PA1  COM_ATTN [PCINT1]
+;                     /RESET PB3  4     11  PA2  TWI-SDA
+;                     [KEY1] PB2  5     10  PA3  TWI-SCL
+;                        LED PA7  6      9  PA4  [USCK/SCL]
+;              [DI/SDA/OC1A] PA6  7      8  PA5  REED_OUT [DO/OC1B]
+;                                 --------
+;
+; ***************************************************************************
+
 
 
 .equ BOOTLOADER_ADDR = 0xd00
diff --git a/avr/devices/n12/n12_main.asm b/avr/devices/n12/n12_main.asm
index 1e6047d..8c4e140 100644
--- a/avr/devices/n12/n12_main.asm
+++ b/avr/devices/n12/n12_main.asm
@@ -223,7 +223,7 @@
 
 
 ; ---------------------------------------------------------------------------
-; Reset and interrupt vectors (will be removed as soon as we can flash data over COM)
+; Reset and interrupt vectors
 
 ;	rjmp main ; Reset vector
         rjmp BOOTLOADER_ADDR ; Reset vector  ; use this for flashed system
@@ -249,14 +249,10 @@
 	reti ; USI_OVF
 
 
-; remove later
-firmwareType:    .dw FW_TYPE
-firmwareVersion: .dw FW_VERSION
-firmwareModules: .dw MODULES_MASK
-
+devInfoBlock:
 devInfoManufacturer: .db 'A', 'Q', 'U', 'A'
 devInfoId:           .db 'N', 0
-devInfoVersion:      .db 1, 0                 ; version, revision
+devInfoVersion:      .db 12, 0                 ; version, revision
 
 firmwareStart:   rjmp main
 
@@ -266,6 +262,8 @@ firmwareStart:   rjmp main
 
 .include "common/utils.asm"
 .include "common/utils_wait_fixed.asm"
+.include "common/utils_copy_from_flash.asm"
+.include "common/utils_copy_sdram.asm"
 .include "common/crc8.asm"
 
 #ifdef MODULES_TIMER