1) Disable Clean URL while installing - Check in the Database for 'clean_url' - it should be 's:1:"0";'

[0] Fix | Delete

2) Default Timezone should be ZERO I.e UTC +0000 and keep default country NONE

[1] Fix | Delete

3) Leave "Check for updates automatically ", "Email notifications" as it is.

[2] Fix | Delete

4) Delete cache_menu item INSERT (not table)

[3] Fix | Delete

5) Delete all watchdog INSERTS And also change its AUTO INCREMENT =1 ;

[4] Fix | Delete

6) We copy the original update.php from zip and add the following lines for upgrading from Drupal 6:

[5] Fix | Delete

[6] Fix | Delete

// Softaculous Change :

[7] Fix | Delete

$update_free_access = true;

[8] Fix | Delete

7) Change the version of Drupal 6 in the upgrade.php and <min_require> tag in info.xml if there is an upgrade in Drupal 6 branch.

[9] Fix | Delete

8) Dont change 'datestamp' to timestamp in DB. It is the launch date

[10] Fix | Delete

9) We do not copy .htaccess from /sites/default/files/.htaccess because Drupal creates it. (Added scopy since 7.53 as it was not created automatically)

[11] Fix | Delete

10) In next update change the datestamp to a variable [[datestamp]] and update the datestamp everytime in install.php

[12] Fix | Delete

11) Try to detect if Clean URL will work and update accordingly in database

[13] Fix | Delete

12) Delete INSERTS only from the below mentioned tables from next version (i.e post 7.50) onwards :

[14] Fix | Delete

[15] Fix | Delete

cache

[16] Fix | Delete

cache_bootstrap

[17] Fix | Delete

cache_update

[18] Fix | Delete

[19] Fix | Delete

These INSERTS should get generated on visits of the installation. Confirmed by Drupal team via email.

[20] Fix | Delete

13) PHP REQUIREMENT LINK: https://www.drupal.org/docs/7/system-requirements/php-requirements#php_required

[21] Fix | Delete