renault bosch need new code

**irfa** · 18th May, 2018, 08:07 AM

hello frıends

old EPROM is damaged, new EPROM is inserted but old code does not fit, new code can be given to the file
attached files
thanks

**irfa** · 18th May, 2018, 07:05 PM

I still need help

**richiebb** · 18th May, 2018, 08:16 PM

not sure but....... try code 1234 with this dump.

i never change code so.......... ¯\_(ツ)_/¯..... also the dump has no calculated checksum
please report.

Edit: Remove Dump

**irfa** · 19th May, 2018, 07:46 AM

ok.thanks,

my frıend eprom code data adress #4E0
checsum data #500 and #520

**richiebb** · 19th May, 2018, 12:16 PM

Sorry for that, try this.
I still do not know how to calculate the checksum.
try and report

Edit: Remove Dump

**richiebb** · 19th May, 2018, 12:34 PM

mate I believe that without the checksum it will not work.
I really want to help you................. one last attempt ......... if it does not work try with your dump code 0123

Edit: Remove Dump

**Raimax** · 19th May, 2018, 12:47 PM

Checksum is not enough. Still very important 540h line. It's complicated

**irfa** · 19th May, 2018, 12:47 PM

Thanks for helping my friend,but it does not work because there is no correct provisioning,again thanks

**richiebb** · 19th May, 2018, 05:22 PM

Originally Posted by irfa

Thanks for helping my friend,but it does not work because there is no correct provisioning,again thanks

Do not give up, mate, there is still the two-digit method since it shares the algorithm of the RCD310.
let the NEC give us the correct values

try save mod file and after turn on read eeprom again.

Edit: Remove Dump

**nigrou** · 19th May, 2018, 09:13 PM

salam
I think the first two digits of the code is 55xx

**neverseenpotato** · 20th May, 2018, 07:38 AM

if this can help you in the attach there are files pair of nec and eprom95256
pre code from the label is B764

**irfa** · 20th May, 2018, 09:28 AM

sorry frıends,I could not test the files because this radion screen was on the car,i will try it at the first opportunity when the car comes

**Dekster** · 20th May, 2018, 09:53 AM

Originally Posted by neverseenpotato

if this can help you in the attach there are files pair of nec and eprom95256
pre code from the label is B764

Hi,

Try ... 5678
nec renault bosch.rar

**richiebb** · 21st May, 2018, 02:23 AM

hello fellow IRFA.
I could decipher how is the checksum, 100% tested, as for the counter I'm not very sure, but analyzing several dumps I think I'm very close.
I know that you must be a little bit cranky to try ... let's do it one more time

I hope it works, this topic has taken my sleep.
regards

**Raimax** · 21st May, 2018, 07:48 PM

Originally Posted by richiebb

hello fellow IRFA.
I could decipher how is the checksum, 100% tested, as for the counter I'm not very sure, but analyzing several dumps I think I'm very close.
I know that you must be a little bit cranky to try ... let's do it one more time

I hope it works, this topic has taken my sleep.
regards

Code is wrong. Should be BD 36 04 47. CRC is correct. The easiest in this algorithm. Counter is wrong