UPDATE INSTRUCTION:
The following files has been changed in version 5.0

1. assets/css/admin.css
2. assets/css/responsive.css
3. assets/css/store-v2.css
4. assets/js/admin.js
5. assets/js/store-v3.js
6. assets/js/store.js
7. assets/images/credit-card-sprite.png - new file
8. assets/vendor/jquery-ui.js - new file
9. assets/vendor/jquery.creditCardValidator.js - new file
10. assets/vendor/jquery.formance.min.js - new file
11. protected/components/Ajax.php
12. protected/components/AjaxAdmin.php
13. protected/components/BraintreeClass.php
14. protected/components/Functions.php
15. protected/components/FunctionsK.php
16. protected/components/FunctionsV3.php
17. protected/components/HttpRequest.php
18. protected/components/InstallHelper.php
19. protected/components/ScriptManager.php
20. protected/components/ScriptManagerCompress.php
21. protected/components/Validator.php
22. protected/components/country-codes.csv - bew file
23. protected/components/PrintWrapper.php - bew file
24. protected/config/main.php
25. protected/config/table_structure.php
26. protected/controller/AdminController.php
27. protected/controller/AjaxadminController.php
28. protected/controller/AjaxController.php
29. protected/controller/AjaxmerchantController.php
30. protected/controller/MerchantController.php
31. protected/controller/CronController.php
32. protected/controller/InstallController.php
33. protected/controller/MerchantController.php
34. protected/controller/StoreController.php
35. protected/controller/UpdateController.php
36. protected/models/food-item.php
37. protected/models/payu.php
38. protected/models/view-receipt.php
39. protected/views/admin/cuisine-add.php
40. protected/views/admin/cuisine-list.php
41. protected/views/admin/customer-list.php
42. protected/views/admin/settings-new.php
43. protected/views/admin/sms-settings.php
44. protected/views/admin/voucher-add.php
45. protected/views/front/browse-list.php
46. protected/views/front/merchant-review.php
47. protected/views/front/payment-list.php
48. protected/views/front/search-list-1.php
49. protected/views/front/search-list-2.php
50. protected/views/front/merchant-info.php - new file
51. protected/views/install/step1.php
52. protected/views/install/step2.php
53. protected/views/install/step3.php
54. protected/views/layouts/admin_tpl.php
55. protected/views/layouts/front_bottom_footer.php
56. protected/views/layouts/login_tpl.php
57. protected/views/layouts/merchant_tpl.php
58. protected/views/merchant/atz-init.php
59. protected/views/merchant/fax-purchase.php
60. protected/views/merchant/food-item-add.php
61. protected/views/merchant/min-table-rates.php
62. protected/views/merchant/pay_stripe.php
63. protected/views/merchant/stripe-init.php
64. protected/views/store/atz-init.php
65. protected/views/store/atz-merchant-init.php
66. protected/views/store/contact.php
67. protected/views/store/driver_signup.php
68. protected/views/store/driver_signup_ty.php
69. protected/views/store/fax.php
70. protected/views/store/menu.php
71. protected/views/store/merchant-bcy.php
72. protected/views/store/merchant-epyinit.php
73. protected/views/store/merchant-signup-step3b.php
74. protected/views/store/payment-option.php
75. protected/views/store/paypal-init.php
76. protected/views/store/profile.php
77. protected/views/store/receipt-front.php
78. protected/views/store/receipt.php
79. protected/views/store/rzr-init-merchant.php
80. protected/views/store/rzr-init.php
81. protected/views/store/search-results.php
82. protected/views/store/sow-init-merchant.php
83. protected/views/store/sow-init.php
84. protected/views/store/stripe-init.php

DATABASE

1. new fields(merchant_ref) added in package_trans table
2. new fields(merchant_ref) added in sms_package_trans table
3. new fields(merchant_ref) added in payment_order table
4. new fields(status) and (featured_image) added in cuisine table

Run the db update example http://bastisapp.com/kmrs/update

in version 5.0 there is missing fields in cuisine table
please replace your file in protected/controller/UpdateController.php
with this http://bastisapp.com/helpfiles/UpdateController.phps