guys i have multiwii v2.5 anyone using it can u pls help me updating the firmware  i used 2.3 bt it doesnt fly my quad pls help

2.3 is the latest firmware AFAIK so if your board has that there is no need to upgrade. What do you mean by it doesnt fly? Is it unstable, not arming at all , not enough power etc?

Can you put up in detail what have you done till now chronologically with a pic of your setup?

Some more questions which can help you out:

Have you uploaded sketch with correct configuration?
Have you calibrated radio,esc,acc,mag and covered the baro?
Have you set flight modes?
Have you correctly set up props and motors and frame orientation?
Have you tuned PID's?

hello friend i have done everythng on the multiwii that u mentioned check the props to the pids well i am doubtfull with the pids bt i kept them default at once and later changed them well when i arm my quad it props rotate to a speed i would say half throttle and at throttle of 10% it gives all it has and doesnt increases as i go to 50% or 100% throttle on tx when i yaw or elevate it by the sticks it juss hovers slightly and flies to few meters by touching ground again and agaian i suppose it doesnt gets proper throttle and all connections and all are correct event the sensors are calibrated and the escs are tuned fine they sing together if u have a customised code for ur quad can u send it to me @ i have used all the firmware i suppose with the 2.1 it is getting thrutst will try soon

may be

the weight of your quad is too much
the props used are not matching motors specs.
amps of esc are low
thrust of motors low
or even the battery cant draw enough amps/volts

can you post all the parts list

i bet u will lol on ur comment i have the best configuration i coud my quad weights juss 800gm (approx) actual 750gm with everythng and specs are as follows:
mutlwii v2.5
lipo 3s 2200mah
esc 30amp
motors 1000kv
10.45 props
and it in all gives me around 2000gms lift so it flied once on kk it was too fast and couldnt control as a begineer nw am able to handle it i made it to do bth the jobs of aerobics and photograhy thank bro any other suggestion i have checked everythng juss need the correct code to upload

ok then, what about your rx is it trimmed?

#define MINTHROTTLE 1060
#define MAXTHROTTLE 1850
#define MINCOMMAND  1000

here is mine check this config

    <PID id="0" name="Roll" p="33" i="30" d="23" />
    <PID id="1" name="Pitch" p="33" i="30" d="23" />
    <PID id="2" name="Yaw" p="68" i="45" d="0" />
    <PID id="3" name="Altitude" p="64" i="25" d="24" />
    <PID id="4" name="PosHold" p="11" i="0" d="0" />
    <PID id="5" name="PosHoldRate" p="20" i="8" d="45" />
    <PID id="6" name="Navigation Rate" p="14" i="20" d="80" />
    <PID id="7" name="Level" p="90" i="10" d="100" />
    <PID id="8" name="Mag" p="40" i="0" d="0" />
   
    <RCRATE value="55" />
    <RCEXPO value="65" />
    <THMID value="50" />
    <THEXPO value="50" />

    <ROLLPITCHRATE value="0" />
    <YAWRATE value="0" />
    <DYNTHRPID value="0" />
    <POWERTRIGGER value="0" />
    <MINTHROTTLE value="1080" />
    <FAILSAFETHROTTLE value="0" />
    <MAGDEC value="-15" />

bro the data u provided me seems helpful will surely try them thank a lot

thread end thankxx all