SPA525G2 firmware upgrade goes bad

[fnikolayev]

Hi,

i'm having trouble upgrading firmware of my SPA525G2. if i upgrade to firmware version >7.4.6 after phone reboots it does not show any image, screen just stays lit but blank. I can connect to phone's web interface and downgrade firmware to 7.4.6. I tried all firmwares and every single one gives me this result.

Just wondering if anybody have expirienced this and if there is a solution for it.

Thank you,

Fen

[cindy toy]

Hello,

The best what to get your question answered is to repost your question as a discussion located here: https://supportforums.cisco.com/community/netpro/small-business/voiceandconferencing/ipphones?view=discussions

Regards,

Cindy Toy

Cisco Small Business Community Manager

for Cisco Small Business Products

www.cisco.com/go/smallbizsupport

twitter: CiscoSBsupport

[fnikolayev]

Thank you Cindy!

i found here

https://supportforums.cisco.com/docs/DOC-17753

that my phone has Hardware version 2.0.0 and that aparently from firmware 7.4.7 new display driver is used. Does it mean that i will not be able to upgrade firmware of my phone?

[fnikolayev]

Just to let everyone know i was able to upgrade to 7.5.1 P01 using file from here

https://supportforums.cisco.com/docs/DOC-12989

Thank you very much!