In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 9:

tar -xf "$1" $target.aes -C $p

             ^-----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

tar -xf "$1" "$target".aes -C $p

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 10:

file=$(echo $target | cut -d'.' -f 0)

            ^-----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

file=$(echo "$target" | cut -d'.' -f 0)

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 11:

tar -xOf "$1" $file.aes | openssl dgst -sha256 | cut -d' ' -f2 > $p/$file.sha1

              ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

                                                                    ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

tar -xOf "$1" "$file".aes | openssl dgst -sha256 | cut -d' ' -f2 > $p/"$file".sha1

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 12:

sum1=`cat $p/$target.aes $p/keysuit.enc $p/certificate.info $p/$file.sha1 | openssl dgst -sha256 | cut -d' ' -f2`

     ^-- SC2006 (style): Use $(...) notation instead of legacy backticks `...`.

             ^-----^ SC2086 (info): Double quote to prevent globbing and word splitting.

                                                               ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

sum1=$(cat $p/"$target".aes $p/keysuit.enc $p/certificate.info $p/"$file".sha1 | openssl dgst -sha256 | cut -d' ' -f2)

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 18:

sum2=`cat $p/sign.sha1`

     ^----------------^ SC2006 (style): Use $(...) notation instead of legacy backticks `...`.

Did you mean: 

sum2=$(cat $p/sign.sha1)

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 20:

echo $sum1

     ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

echo "$sum1"

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 21:

echo $sum2

     ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

echo "$sum2"

In /logs/firmware/patool_extraction/DUMP/mtdblock8_unblob_extracted/mtdblock8_extract/0-9650176.squashfs_v4_le_extract/sbin/fw_sign_verify.sh line 23:

if [ "$sum1" == "$sum2" ] ; then

             ^-- SC3014 (warning): In POSIX sh, == in place of = is undefined.

For more information:

  https://www.shellcheck.net/wiki/SC3014 -- In POSIX sh, == in place of = is ...

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...

  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...