Auto Revert Firmware Back Software

[erdem_ua]

Since too many people have this issue,
I decided to make a script that enables older firmware...
How it's looking?

Code: Select all

#I planned thet to detecting partition that needed to enable, used to sense PartitionSwithch file....
if [ -f /mtd_rwarea/PartitionSwitch_1_0 ]
then

mkdir /dtv/test
mount -t auto /dev/tbml8 /dtv/test
#OLDVERS = T-CHL7DEUC-2004.1
OLDVERS=$(/bin/busybox egrep -e 'T-CHL7DEUC-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)
#OLDVERS=2004
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' Version.1) > Version.0

else

mkdir /dtv/test
mount -t auto /dev/tbml10 /dtv/test
#OLDVERS = T-CHL7DEUC-2004.1
OLDVERS=$(/bin/busybox egrep -e 'T-CHL7DEUC-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)
#OLDVERS=2004
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' Version.0) > Version.1

fi

[erdem_ua]

Himmm, there is a problem at script. Because you needed to have Version.1 if you have PartitionSwitch_1_0 file.
Problem is that I forgot to place full path names. I think this script is proper now.
Touch is not required because echo will create the destination file automatically.

Code: Select all

if [ -f /mtd_rwarea/PartitionSwitch_1_0 ]
then

mkdir /dtv/test
mount -t auto /dev/tbml8 /dtv/test
#OLDVERS = T-CHL7DEUC-2004.1
OLDVERS=$(/bin/busybox egrep -e 'T-CHL7DEUC-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)
#OLDVERS=2004
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' /mtd_rwarea/Version.1) > /mtd_rwarea/Version.0

else

mkdir /dtv/test
mount -t auto /dev/tbml10 /dtv/test
#OLDVERS = T-CHL7DEUC-2004.1
OLDVERS=$(/bin/busybox egrep -e 'T-CHL7DEUC-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)
#OLDVERS=2004
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' /mtd_rwarea/Version.0) > /mtd_rwarea/Version.1

fi

Moving this to Telnet Enabler app will create auto firmware downgrade application
But before we needed to change "T-CHL7DEUC" string with auto detected firmware name. I think current version file that exits will help us

[arris69]

...

Moving this to Telnet Enabler app will create auto firmware downgrade application
But before we needed to change "T-CHL7DEUC" string with auto detected firmware name. I think current version file that exits will help us

think safe way to detect the right firmware-type is from the file /.info
ack?

arris

[juusso]

I think this script is proper now.

Hi, two questions:

1. Do we need paste this script code between:

Code: Select all

#!/bin/sh

...Your code ...

exit

to have right script file to run it? eg. revert.sh ? (and chmod it to 755 of course)

2. If i understood right, these rows are not important in case if the fw version is different, not 2004.1?

Code: Select all

#OLDVERS = T-CHL7DEUC-2004.1
...
#OLDVERS=2004
...

They are after #, so they`re just comments?
Tx.

[erdem_ua]

...

Moving this to Telnet Enabler app will create auto firmware downgrade application
But before we needed to change "T-CHL7DEUC" string with auto detected firmware name. I think current version file that exits will help us

think safe way to detect the right firmware-type is from the file /.info
ack?

arris

You are right as always
Do you know how could I make it proper? Lines below doesn't look working good...

Code: Select all

FWNAME=$(cat /.info)
OLDVERS=$(/bin/busybox egrep -e '$(FWNAME)-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)

[erdem_ua]

I think this script is proper now.

Hi, two questions:

1. Do we need paste this script code between:

Code: Select all

#!/bin/sh

...Your code ...

exit

to have right script file to run it? eg. revert.sh ? (and chmod it to 755 of course)

2. If i understood right, these rows are not important in case if the fw version is different, not 2004.1?

Code: Select all

#OLDVERS = T-CHL7DEUC-2004.1
...
#OLDVERS=2004
...

They are after #, so they`re just comments?
Tx.

1. I don't know if bash scripts are terminated with exit
But It's good thing to put #!/bin/sh to header...

2.Those are just for testing, developing Not important.

[arris69]

...
Do you know how could I make it proper? Lines below doesn't look working good...

Code: Select all

FWNAME=$(cat /.info)
OLDVERS=$(/bin/busybox egrep -e '$(FWNAME)-[0-9][0-9][0-9][0-9].[0-9]' /dtv/test/exeDSP)

i'm not shure what you need in your variable, but grepping in a binary is a pain

Code: Select all

FWNAME=`head -n 1 /.info`
OLDVERS=$(egrep -a "$FWNAME-[0-9][0-9][0-9][0-9].[0-9]" /dtv/test/exeDSP)
ver=${OLDVERS#*$FWNAME-}
fver="$FWNAME-$ver"
len=$((${#FWNAME} + 7))
rver=${fver:0:len}

echo $rver

hope samy's egrep supports -a option, can't test it

hth
arris

[erdem_ua]

...
hope samy's egrep supports -a option, can't test it

hth
arris

Code: Select all

# OLDVERS=$(egrep -a "$FWNAME-[0-9][0-9][0-9][0-9].[0-9]" /dtv/test/exeDSP)
egrep: invalid option -- a

but

Code: Select all

OLDVERS=$(grep $(echo "$FWNAME-[0-9][0-9][0-9][0-9].[0-9]") /dtv/test/exeDSP)

makes the job.


THE LATEST SCRIPT:

Code: Select all

if [ -f /mtd_rwarea/PartitionSwitch_1_0 ]
then

mkdir /dtv/test
mount -t auto /dev/tbml8 /dtv/test
FWNAME=$(cat /.info)
OLDVERS=$(/bin/busybox egrep -e $(echo "$FWNAME-[0-9][0-9][0-9][0-9].[0-9]") /dtv/test/exeDSP)
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' /mtd_rwarea/Version.1) > /mtd_rwarea/Version.0

else

mkdir /dtv/test
mount -t auto /dev/tbml10 /dtv/test

OLDVERS=$(/bin/busybox egrep -e $(echo "$FWNAME-[0-9][0-9][0-9][0-9].[0-9]") /dtv/test/exeDSP)
OLDVERS=$(echo $OLDVERS | sed s/.*-//g | sed 's/\..*//g')
echo $(sed 's/_00[0-9][0-9][0-9][0-9]_/_00'$OLDVERS'_/g' /mtd_rwarea/Version.0) > /mtd_rwarea/Version.1

fi

Looks working on here