DSL2640U-squashfs-cfe.bin Illegal Image error D-Link DSL-2640U(B)

[j_bogrd]

Hello guys, sorry to bother but I already tried several ways to install OpenWRT in a D-Link 2640U(B) and I still get the Illegal Image error due to Digital Signature Check Fail Broadcom Corporation Max Lenght:19.

This is a text capture of the error message:

Allocating 4194316 bytes for broadcom image.
Memory allocated
Total image size: 4194308
Digital Signature check Fail!:    E} Y;  Oc  $ D&       z   Y r  /  b  $    U
                                                                                p
                                                                                                 *
E}q       !PRge +6@N]m | f  I l% 5@P;f +h         M  "   )    g e L  y )L  3    3(V  T uG  "  ] ;q    F "f    9 =   *E      V}{      T\,     U Jx   T1   tz ?a ck   n]  V?
                                                                                                                                                                                               a d7 k / M  igi
    L *EV       F)C7@   "b )  X  E] /W%U )-  N 1 <K_   j   E <O 10  _   C T a *   [   mmb   * 4   K^
                       fviL ;R ?%        ;   3   iCHh$ VB    Cv    " Y)6  RZ  p  t   *<      M;    '   AA  z0 P_DW    7]m
     o%  WG SÇ1    73cl    KD
                                 ]   Ty=, Broadcom Corporation Max Length:19
Tftp Image failed: Illegal image.

I ended up trying to install the OpenWRT firmware via TFTP because the router web interface even with the web CFE (turn on and keep reset pressed) gave the same Illegal Image error.

This router has a BRCM6338 chip and I already tried all the versions from 17.01.1 (lede) to 19.07.9. I even tried DSL2640B-B-squashfs-cfe.bin but it does not matches because it is for a 6348 if I am not mistaken and mine is a 6338.

Is there a way to solve that Digital Signature Check Fail (Illegal Image error)?

Thanks in advance for your time.

[j_bogrd]

Ok I finally found an specufuc build for this model (DSL-2640B rev T1) and it is from @spliew https://github.com/spliew89/openwrt-bcm6333 but I am having some problems so I will make another post. This one can be closed.