History of the Lord Srinivasa
On the request of Sowanka and other sages, Sootha maharshi narrated them the story of Sri Venkateswara. Sage Narada who will always be moving from one place to another entered Sathya Loka and saluted his parents Barahama and Saraswathi told Brahma that after Krishna Avatar, Sri Hari did not go to Bhooloka again and therefore, it has become a hell, as innocent are teased by the wicked. They therefore decided that time has come when God has to appear again on earth and restore Dharma. Narada descended to Bhooloka and decided that Brighu Maharshi would conduct test as who among Trimurtis will bear the Yagna effect.
Accordingly Brighu Maharshi first went to Satyaloka where Brahma was explaining the Vedas to several eminent rishis seated there. When, Brighu Maharshi occupied the throne without showing any respect and without saluting, Brahma lost his temper and chided Brighu. Brighu got down from the throne and cursed Brahma saying "YOU WILL NOT HAVE ANY TEMPLE IN THE EARTH AND NONE WILL WORSHIP YOU".
Brighu, then went to Kailash where Shiva was in privacy with his wife Parvathi. Enraged Siva took his Trisool to finish Brighu but stopped on the intervention of Parvathi. Brighu in his turn also cursed Siva saying, "YOU WILL BE WORSHIPPED IN THE TEMPLE ON EARTH IN THE SHAPE OF "LINGA" INSTEAD OF YOUR REAL SHAPE".
Brighu, then went to Vaikuntham to request Sri Maha Vishnu to bear the Yagna effects.Maha Vishnu though aware of the arrival of Brighu pretended to be innocent resting on the Sesha Sayanam and Maha Laxmi sitting near his holy feet pressing them. Recalling the maltreatment meted out to him at Sathyaloka and Kailash, Brighu rushed towards Maha Vishnu and kicked him on his chest with right foot. Without showing any annoyance, Vishnu squashed the third eye that was embedded in the sole of Brighu's right foot with the result, he lost his ego and pride. Repented Brighu then explained the purpose of his visit. Sri MahaVishnu promised to receive the benefit of Yagna being conducted by the eminent sages on the banks of Ganga at the appropriate time.
Lakshmi who was witnessing all these acts however got angry with her husband especially because, he tended such a rude person who dishonored her by kicking in the chest of Maha Vishnu where she lived. When Lakshmi left Vaikuntham there was no pleasure and pomp. Maha Vishnu became helpless. He ran helter and skelter in search of Lakshmi without food and sleep and atlast reached Tirupati and took shelter in a Valmikam (anthill) at the Adi Varsha's shrine meditating for the return of Lakshmi.
Narada came to know the separation and the dwelling places of Lakshmi, at Kolhapur and of Maha Vishnu at Venkatachalam. Narada as directed by Brahma met her and narrated how Sri Hari is starving for food and much reduced. Worried Lakshmi prayed Brahma and Shiva and the three decided to take the shape of a cow, a calf and a cow-herd woman. As a cow-herd woman Lakshmi sold the cow and the calf to Chola King. In the guise of cow Brahma daily gave rain of milk to Sri Hari and returned home with no drop of milk. The Chola Queen who desired to feed her child with the milk from the new cow suspected that the cow-herd boy of stealing the milk and ordered him to bring the milk of the new cow at any cost next day. With a fear of severe punishment the cow-herd boy followed the cow and saw at Valmiki it is raining milk through her breast. The cow-herd boy burst into anger and took his axe and tried to hurt the animal. Sri Hari immediately came out of the Valmiki (ant hill) and saved the cow and bore that blow on his head and started bleeding profusely. The Chola King seeing the sprinkles of blood on the cow reached Valmiki and after hearing sighing sound from there found Maha Vishnu in a pool of blood. On seeing the Chola King Maha Vishnu got wild and cursed him to become a ghost as he got the wound through his cow-herd. Chola King begged for pardon. Maha Vishnu relented and gave him a boon to reborn in the same family as Akasa Raju. He pitied cow-heard boy and gave him a boon that his generation to have the first Darshan of the Lord in his temple.
Lord Krishna consoled her and promised to create an opportunity in Kaliyuga. Yasoda, therefore was born as Vakuladevi and became a devotee of Varaha Swamy. Sri Hari with a wounded head was wandering in the woods in search of a suitable medicine. On the advice of Brihaspati, the Guru of Devas who met him in the forest, went in search of a fig tree to apply its milk mixing it with the other herbs to the wound and chanced upon to hear Sri Krishna Bhajana and walked towards the cottage crying in pain "mother.....mother". Vakuladevi heard the call, and after fondly enquiring applied the medicine, fed him with some fruits and milk, and named him as Srinivasa. Sri Hari revealed to her his previous birth as Lord Krishna. Overjoyed, she bathed him and took to Varaha Swamy. On his request Varahaswamy gave him 100 sqft of land with a promise that all the pilgrims to Tirupati first visit his Temple, then have Darshan of Sri Venketeswara. The image of Sri Venkateswara is self manifest (Swayambhu) and not prepared by any mortal. The celebrated temple of Sri Venkateswara stands on a hill named Venkatadri.
Brahmotsavam
Brahmotsavam means "Grand celebration" or a "celebration performed by Brahma". We will shortly see how both the meanings are appropriate for this event.
Lord Indra once killed a Brahma-raakshasa (a Brahmin with demonic characters). In doing so, he incurred a great sin of killing a Brahmana-"Brahma hatya dosham". To relieve Indra of this burden, Lord Brahma conducted a ceremony. In this ceremony, officiated by Brahma himself, Indra held Sriman Narayana ( Lord Vishnu) on his head during the special ritual bath "Avabritha Snaanam". This verily was the first Brahmotsavam. Because of the immense cleansing power of Brahmotsavam, this utsavam is periodically performed in Temples to wash away all sins that may have been incurred in the community as a whole. It is said that the Lord Brahma himself rendered the first Brahmotsavam seva (service) to Lord Venkateshwara (Vishnu) of the Thirumalaishrine. Indeed, it is a common belief that every Brahmotsavam is witnessedby Lord Brahma. In recognition of this, a well decorated empty chariot ispulled in front of the chariot carrying the deities at the processions heldduring the Brahmotsavam Brahma is believed to be seated in that chariot and oversee the celebration. Thus, Brahmotsavam is also referred to as "Brahmapratyakshotsavam" (celebration conducted right in front of Brahma).
Brahmotsavam celebration lasts for 9 days. It starts on first day of Navaratri and concludes on Vijayadashami. It begins with Ankurarpanam and concludes with Avabhritha Snanam (Ritual bath or Theertha vaari). On each day, the Utsava Murthis (Mobile Deities) will be nicely decorated and taken in procession, once in the morning and once in the evening on different Vahanams (vehicles). In the night, there will also be Unjal seva (Deities seated on the swing).

Night View of Tirumala Pedda Sesha Vahanam
Dwajaarohanam: It is a flag hoisting festival that is held on the first day by hoisting a flag (Garudadhwaja) with a picture of Garuda (Vehicle of Lord Maha Vishnu) on the top of the Dwajah Sthambham in front of the sanctum santorum. It is said to be a symbolic significance of formal invitation to all the Deities at attend the Brahmotsavam festival.
Pedda Sesha Vahanam: After the Dwajaarohanam the Lord is taken out in a procession in the evening on Aadi Sesha the thousand headed Chief Serpent God as his vehicle. Aadisesha is the seat on which Lord SriManNarayana rests in his abode Sri Vaikunta. Tirumala hills the abode of Lord Venkateswara is said to be the manifestation of Lord Aadisesha. Pedda Aadisesha vahanam will be seven headed.

Chinna Sesha Vahanam Hamsa Vahanam
Chinna Sesha Vahanam: On the second day morning the Lord is taken out in a procession on Vaasuki (Serpent God) as his vehicle. In Bhagavath Geetha Lord Sri Krishna says He is Vaasuki among the serpents. Chinna Sesha Vahanam will be five headed.
Hamsa Vahanam: On the second day evening the Lord is again taken out in a procession on Hamsa (Swan) as his vehicle. Hamsa or swan means ‘pure’. Hamsa is believed to have a high intellectual capability, and can distinguish the good from the bad.

Simha Vahanam Muthyala Pallaki Vahanam
Simha Vahanam: On the third day morning the Lord is taken out in a procession on Lion symbol as his vehicle. Lion is a symbol of royalty and power. Lord assumed the form of half man and half lion in his Narasimha Avathara. Lord Sri Krishna says in Bhagavath Geetha that he is the Lion among the animals.
Muthyala Pallaki Vahanam: On the third day evening the Lord is again taken out in procession along with his concerts Sri Devi and Bhoo Devi in a palanquin decorated with a canopy of pearls. Pearl is said to be a symbol of purity and royalty.

Kalpa Vruksha Vahanam Sarva Bhoopala Vahanam
Kalpa Vruksha Vahanam: On the fourth day of the festival the Lord is taken out in procession in the morning on Kalpa Vruksha as his vehicle signifying that he is the giver of boons to his devotees and fulfills their wishes.
Sarva Bhoopala Vahanam: On the fourth day evening the Lord is again taken out in procession on a vehicle called as Sarva Bhoopala Vahanam signifying that He is the Lord of Lords.

Mohini Avatharam Garuda Vahanam
Mohini Avatharam: On the fifth day morning the Lord is taken out in procession decorated in the attire of Mohini Avatharam (Ksheera Sagara Madhanam) the one who has distributed the Divine Nectar.
Garuda Vahanam: On the fifth day evening the Lord Sri Venkateswara is taken out in procession specially decorated, with his main devotee and chief vehicle Garuda (Garukmantha) the king of birds as his vehicle. It is a unique occasion when thousands gather together and would like to witness the procession. This day is also represented by the Chief Minister, Govt. of Andhra Pradesh by symbolically offering new silk clothes to the Lord as a mark of obeisance and thanks giving to the Lord of the Universe. It is believed and said that it is highly meritorious and mukthi pradham to have darshan of the Lord seated on Garuda

Hanumantha Vahanam Swarna Rathotsavam Gaja Vahanam
Hanumantha Vahanam: On the sixth day morning the Lord is taken out in procession with Lord Hanuman as his vehicle. Hanuman was the personification of the most trusted and self less service to the Lord in his avathara as Sri Rama in Treta Yuga. Undoubtedly Lord Hanuman was the greatest devotee of Lord Sri Rama.
Swarna Rathotsavam / Gaja Vahanam: On the sixth day evening the Lord is taken out in procession on Elephant (Gaja) or Airavatham as his vehicle. We find in Sri Madbhagavatham (Gajendra Moksham) Lord instantly coming to the rescue of Gajendra and get him relieved from the clutches of the Crocodile.

Surya Prabha Vahanam Chandra Prabha Vahanam
Surya Prabha Vahanam: On the seventh day morning the Lord Venkateswara is taken out in procession with Sun God driving the Chariot. Purusha Sooktha describes Sun as born from the eyes of Lord SrimanNarayana (Chaksho! Suryo Ajayathah!). Sun is said to be an incarnation of Lord Maha Vishnu (Surya Narayana)
Chandra Prabha Vahanam: On the seventh day evening the Lord is again taken out in procession with Moon as symbol of his vehicle. Purusha Sooktha describes Moon as "Chandrama Manaso Jaathaha (Moon is born from the mind Lord Maha Vishnu)". Moon is the commander of mind and is a symbol of cool and pleasantness. Both these rituals are symbolic significance that He is the cause for day and night.

Rathostavam Aswa Vahanam
Rathostavam: On the penultimate day (eighth day) morning the Lord Venkateswara is taken out in procession along with his concerts seated on a fully decorated Chariot pulled by the devotees with the chanting of Govinda Nama Smarana. Tirumala will be flooded with devotes to witness this occasion. It is believed and said that those who witness the Lord seated on the Chariot during Rathostavam will not be reborn. Idols of Daruka the charioteer of Lord Sri Krishna and four horses are placed before the Lord on the chariot.
Aswa Vahanam: On the eighth day evening the Lord is again taken out in procession with Aswa (Horse) as his vehicle symbolizing the forthcoming Kalki Avathara. Lord Venkateswara used to ride on a horse during hunting of wild animals. Lord assumed the form of Horse head during his avathara as Hayagreeva.

Chakra Snanam Dwajaavarohanam
Chakra Snanam: On the ninth day morning, last day of the Brahmostavam, special abhishekam (Avabhrutha Snanam) is held for utsava moorthy of Lord Venkateswara and his concerts Sri Devi and Bhoo Devi in the complex of Lord Varaha Swamy temple on the banks of Swamy Pushkarini. Later, the Sudarshana Chakra (Disc weapon of the Lord) is immersed in the waters of Swamy Pushkarini. We find large number of devotes simultaneously taking a dip in the Pushkarini waters at that time. It is believed and said that one will get absolved from sins by taking a dip in Swamy Pushkarini simultaneously along with the Sudarshana Chakra on this day.
Dwajaavarohanam: On the ninth day evening the Garuda flag will be lowered as a mark of completion of the Brahmostavam.