I made some tries
Flashing the AVM kernel.image as decribed in the "unbrick" section works.
ROM VER: 1.1.3
CFG 01 [|]
(AVM) EVA Revision: 1.1109 Version: 2109
(C) Copyright 2005 AVM Date: Feb 2 2011 Time: 16:38:22 (1) 2 0x0-0x341D
[FLASH:] MACRONIX Uniform-Flash 16MB 64 Bytes WriteBuffer
[FLASH:](Eraseregion [0] 128 sectors a 128kB)
[SYSTEM:] AR9 on 393MHz/393MHz/196MHz
<create jffs2 from 0x90E80000 len 0x100000 jffs2_size 16>
Infineon PHY11G detected
Infineon PHY11G detected
Eva_AVM >..........................
Lantiq xDSL CPE AR9
[ 0.000000] Linux version 2.6.32.61 (jpluschke@EmbeddedVM) (gcc version 4.8.1 (Buildroot 2013.05) ) #3 Mon Aug 12 18:06:25 CEST 2019
[ 0.000000] phym = 04000000, mem = 04000000, max_pfn = 00004000
[ 0.000000] Reserving memory for CP1 @0xa4000000, size 0x00000000
..... much more follows.
using 17.01.0 - it starts and shows the EVA prompt. Then nothing happens anymore
using lede-17.01.1-lantiq-xway-FRITZ7320-initramfs-kernel
ROM VER: 1.1.3
CFG 01 [|]
(AVM) EVA Revision: 1.1109 Version: 2109
(C) Copyright 2005 AVM Date: Feb 2 2011 Time: 16:38:22 (1) 2 0x0-0x341D
[FLASH:] MACRONIX Uniform-Flash 16MB 64 Bytes WriteBuffer
[FLASH:](Eraseregion [0] 128 sectors a 128kB)
[SYSTEM:] AR9 on 393MHz/393MHz/196MHz
<create jffs2 from 0x90E80000 len 0x100000 jffs2_size 16>
Infineon PHY11G detected
Infineon PHY11G detected
Eva_AVM >
CAUSE = 0x00000008 No TLB Entry for Load
STATUS = 0x11000006 EPC = 0x8100645C
BADVADDR = 0xDE2BFB78 ERROREPC = 0x81000550
$ 0(zr):0x00000000 $ 8(t0):0x00000002 $16(s0):0xDE2BFB78 $24(t8):0x9E1A19BC
$ 1(at):0x80000000 $ 9(t1):0x00000010 $17(s1):0x90020000 $25(t9):0x81000410
$ 2(v0):0x90020018 $10(t2):0x0000003A $18(s2):0x810CBEF8 $26(k0):0x00000000
$ 3(v1):0x73717368 $11(t3):0x00000020 $19(s3):0x810C0000 $27(k1):0x00000000
$ 4(a0):0x90F80000 $12(t4):0x0000002C $20(s4):0x00000003 $28(gp):0x81018360
$ 5(a1):0x00F60000 $13(t5):0x00000000 $21(s5):0x810AAE80 $29(sp):0x810CBEA0
$ 6(a2):0x00000000 $14(t6):0x03000000 $22(s6):0x8104555C $30(s8):0x810C0000
$ 7(a3):0x00290000 $15(t7):0x0000FF00 $23(s7):0x00002B21 $31(ra):0x810024C4
ROM VER: 1.1.3 ...
This repeats endless.
If erasing mtd3 and mtd4 I get again "illegal firmware".
If reflashing then with AVM kernel.image - It works again.
ftp log:
ftp> open 192.168.178.1
Connected to 192.168.178.1.
220 ADAM2 FTP Server ready
Name (192.168.178.1:mint): adam2
331 Password required for adam2
Password:
230 User adam2 successfully logged in
Remote system type is AVM.
ftp> bin
200 Type set to BINARY
ftp> passiv
Passive mode on.
ftp> quote MEDIA FLSH
200 Media set to MEDIA_FLASH
ftp> put /media/mint/A843-3ABB/lede-17.01.0-r3205-59508e3-lantiq-xway-FRITZ7320-initramfs-kernel.bin mtd1
local: /media/mint/A843-3ABB/lede-17.01.0-r3205-59508e3-lantiq-xway-FRITZ7320-initramfs-kernel.bin remote: mtd1
227 Entering Passive Mode (192,168,178,1,12,9)
150 Opening BINARY data connection
226 Transfer complete
3030184 bytes sent in 9.29 secs (318.6778 kB/s)
ftp> quote REBOOT
221 Thank you for using the FTP service on ADAM2
ftp> quit
221 Goodbye.
In case of the much larger AVM kernel
mint@mint:~$ ftp
ftp> open 192.168.178.1
Connected to 192.168.178.1.
220 ADAM2 FTP Server ready
Name (192.168.178.1:mint): adam2
331 Password required for adam2
Password:
230 User adam2 successfully logged in
Remote system type is AVM.
ftp> bin
200 Type set to BINARY
ftp> passiv
Passive mode on.
ftp> quote MEDIA FLSH
200 Media set to MEDIA_FLASH
ftp> put /media/mint/A843-3ABB/var/tmp/kernel.image mtd1
local: /media/mint/A843-3ABB/var/tmp/kernel.image remote: mtd1
227 Entering Passive Mode (192,168,178,1,12,14)
150 Opening BINARY data connection
226 Transfer complete
**14661294 bytes sent in 48.39 secs (295.8748 kB/s)**
ftp> quote REBOOT
221 Thank you for using the FTP service on ADAM2
ftp> quit
221 Goodbye.
mint@mint:~$
The only hint is:
CAUSE = 0x00000008 No TLB Entry for Load
I assume that I have maybe a 7320 which is different.
PCB Backside below LAN 5.40 554.773 REV01